The next generation of goaltending development…
Mike Buckley
GDS President/Head Instructor
Goaltending Coach for the Pittsburgh Penguins
Two-time Stanley Cup Champion
Mike is the president and head instructor for GDS, which he founded in 2005 following playing 5 professional seasons. An alumnus of UMass-Amherst, Mike was the goaltending coach for his alma mater for 5 years. Following UMass, coach Buckley joined UNH where the Wildcats reached a #1 National Ranking.
In 2013, Coach Buckley was hired by the Pittsburgh Penguins to develop and mentor goalies in the organization. In four years, the AHL affiliate Wilkes-Barre Penguins had a record setting four consecutive AHL ALL-Star goaltenders (Zatkoff, Murray, Jarry and Desmith) under Buckley's coaching. Three of those seasons obtaining the leagues lowest GAA. In both 2016 and 2017 Buckley became a two-time Stanley Cup Champion, the first among US born goalie coaches. In 2019 Tristan Jarry was selected as an NHL All-Star, the fourth NHL All-Star to work with coach Buckley.
Throughout his time as GDS head instructor, over 30 long time GDS goalies have become NCAA Division-one goaltenders with over 90% of long-time students playing at the collegiate level. Many of which have gone on to play professionally. Coach Buckley believes in instilling a strong work ethic, confidence and a balanced approach to developing goalies through strong fundamentals, play reading and positioning.
Coach Buckley also consults for leading sports management groups, equipment manufacturers and other goalie coaches in North America and Europe.
GDS President/Head Instructor
Goaltending Coach for the Pittsburgh Penguins
Two-time Stanley Cup Champion
Mike is the president and head instructor for GDS, which he founded in 2005 following playing 5 professional seasons. An alumnus of UMass-Amherst, Mike was the goaltending coach for his alma mater for 5 years. Following UMass, coach Buckley joined UNH where the Wildcats reached a #1 National Ranking.
In 2013, Coach Buckley was hired by the Pittsburgh Penguins to develop and mentor goalies in the organization. In four years, the AHL affiliate Wilkes-Barre Penguins had a record setting four consecutive AHL ALL-Star goaltenders (Zatkoff, Murray, Jarry and Desmith) under Buckley's coaching. Three of those seasons obtaining the leagues lowest GAA. In both 2016 and 2017 Buckley became a two-time Stanley Cup Champion, the first among US born goalie coaches. In 2019 Tristan Jarry was selected as an NHL All-Star, the fourth NHL All-Star to work with coach Buckley.
Throughout his time as GDS head instructor, over 30 long time GDS goalies have become NCAA Division-one goaltenders with over 90% of long-time students playing at the collegiate level. Many of which have gone on to play professionally. Coach Buckley believes in instilling a strong work ethic, confidence and a balanced approach to developing goalies through strong fundamentals, play reading and positioning.
Coach Buckley also consults for leading sports management groups, equipment manufacturers and other goalie coaches in North America and Europe.
Steve Mastalerz
GDS Vice President/Instructor/Former Student
Goaltending Coach for The Northeast Generals, NAHL
steve@gdsgoalies.com
Steve, a long time student of Mike Buckley, played youth hockey for Top Gun before heading off to Kimball Union Academy where he was one of prep school hockey's best goaltenders. Following KUA, Steve received a scholarship at UMass-Amherst where he made an immediate impact as a freshman and a leader. Steve serverd as the goaltending coach in the LA Kings organization for the Manchester Monarchs in the ECHL for the 2016/2017 and 2017/2018 seasons. During his tenure the Monarchs reached the conference finals, and second round of the playoffs.
In four years at UMass, Mastalerz appeared in 77 and logged a 3.12 goals-against average and a .894 save percentage. The North Andover, Mass., native posted 20 wins and four shutouts, which ranks fourth in program history, while his career saves total (1,953) is fifth all-time in the UMass record book.Mastalerz, a five-time Hockey East Defensive Player of the Week in his career, set UMass' Division I single game saves record, sixth-most in NCAA history, with 75 stops in the Minutemen's five overtime victory at Notre Dame this past March 6, in the Hockey East Tournament. Following UMass, Steve joined the LA Kings organization and joined the Manchester Monarchs of the AHL, being part of their Calder Cup run and capturing the teams first Calder Cup.
GDS Vice President/Instructor/Former Student
Goaltending Coach for The Northeast Generals, NAHL
steve@gdsgoalies.com
Steve, a long time student of Mike Buckley, played youth hockey for Top Gun before heading off to Kimball Union Academy where he was one of prep school hockey's best goaltenders. Following KUA, Steve received a scholarship at UMass-Amherst where he made an immediate impact as a freshman and a leader. Steve serverd as the goaltending coach in the LA Kings organization for the Manchester Monarchs in the ECHL for the 2016/2017 and 2017/2018 seasons. During his tenure the Monarchs reached the conference finals, and second round of the playoffs.
In four years at UMass, Mastalerz appeared in 77 and logged a 3.12 goals-against average and a .894 save percentage. The North Andover, Mass., native posted 20 wins and four shutouts, which ranks fourth in program history, while his career saves total (1,953) is fifth all-time in the UMass record book.Mastalerz, a five-time Hockey East Defensive Player of the Week in his career, set UMass' Division I single game saves record, sixth-most in NCAA history, with 75 stops in the Minutemen's five overtime victory at Notre Dame this past March 6, in the Hockey East Tournament. Following UMass, Steve joined the LA Kings organization and joined the Manchester Monarchs of the AHL, being part of their Calder Cup run and capturing the teams first Calder Cup.
Josh Reinstein
GDS Instructor/Former Student
jreinstein@gdsgoalies.com
Josh Reinstein grew up in Los Angeles, California and first came to New Hampshire to play for the Junior Monarchs in 2013. It was then he first started training GDS. He attended Worcester State as a freshman in 2016/17 and helped backstop the team to the organization's first winning season in over a decade his sophomore year. The team also received national ranking votes after starting 11-1, the first time since the 70's. Through college, Josh trained with Steve Mastalerz in North Andover. He graduated in 2020.
Josh has been coaching with GDS since he first started training with them in 2013. He now calls the New Hampshire seacoast home and spent the 2020/21 season as his first year as a Head Instructor.
GDS Instructor/Former Student
jreinstein@gdsgoalies.com
Josh Reinstein grew up in Los Angeles, California and first came to New Hampshire to play for the Junior Monarchs in 2013. It was then he first started training GDS. He attended Worcester State as a freshman in 2016/17 and helped backstop the team to the organization's first winning season in over a decade his sophomore year. The team also received national ranking votes after starting 11-1, the first time since the 70's. Through college, Josh trained with Steve Mastalerz in North Andover. He graduated in 2020.
Josh has been coaching with GDS since he first started training with them in 2013. He now calls the New Hampshire seacoast home and spent the 2020/21 season as his first year as a Head Instructor.
Joe Grossman
GDS Instructor
Harvard Women's Goalie Coach
jgrossman@gdsgoalies.com
Joe spent 5 years playing high school hockey, first at Foxboro High School as an 8th grader, then 4 years for Boston College High School. While at BC High, he won the 2002 Super 8 tournament, was named a Catholic Conference All-Star twice, named to both the Boston Globe and Boston Herald All Scholastic Dream Teams twice, was HNIB’s Top Goaltender and won the 2004 USA Hockey Midget National Championship as a member of the Greater Boston Jr Bruins. Following BC High, Joe spent two years in the USHL playing for the Waterloo Blackhawks before matriculating to Dartmouth College where he was part of the 2007 Ivy League champions.
Joe has spent the last three seasons as goalie coach for the women’s team at Harvard University, where they lead the NCAA in team save percentage in 2018-19, while racking up multiple ECAC and Ivy League awards.
GDS Instructor
Harvard Women's Goalie Coach
jgrossman@gdsgoalies.com
Joe spent 5 years playing high school hockey, first at Foxboro High School as an 8th grader, then 4 years for Boston College High School. While at BC High, he won the 2002 Super 8 tournament, was named a Catholic Conference All-Star twice, named to both the Boston Globe and Boston Herald All Scholastic Dream Teams twice, was HNIB’s Top Goaltender and won the 2004 USA Hockey Midget National Championship as a member of the Greater Boston Jr Bruins. Following BC High, Joe spent two years in the USHL playing for the Waterloo Blackhawks before matriculating to Dartmouth College where he was part of the 2007 Ivy League champions.
Joe has spent the last three seasons as goalie coach for the women’s team at Harvard University, where they lead the NCAA in team save percentage in 2018-19, while racking up multiple ECAC and Ivy League awards.
Jamie Regan
GDS Instructor/ Former Student
jregan@gdsgoalies.com
Jamie` a native of Chagrin Falls, Ohio where he grew up playing for the Cleveland Barons. After the Barons he made the tough decision to play high school hockey for University School where he went to the frozen four, three out of his four years. Winning it all his junior year. Following high school he played two years for the Philadelphia Revolution in the Eastern Junior Hockey league. Jamie was named to the EJHL All-Star team in the 2012 season. From there he committed to the University of New Hampshire for the 2012-13 season. While at UNH Regan appeared in 9 games, receiving most of his time senior year where he had a 2.87 GAA and a .907 SV%.
Jamie trained with Mike Buckley through out his college career gaining valuable insight on not only how to train hard but also right. Regan joins the team with a vast knowledge of the position and the game, he is excited to continue his hockey career in the coaching world.
GDS Instructor/ Former Student
jregan@gdsgoalies.com
Jamie` a native of Chagrin Falls, Ohio where he grew up playing for the Cleveland Barons. After the Barons he made the tough decision to play high school hockey for University School where he went to the frozen four, three out of his four years. Winning it all his junior year. Following high school he played two years for the Philadelphia Revolution in the Eastern Junior Hockey league. Jamie was named to the EJHL All-Star team in the 2012 season. From there he committed to the University of New Hampshire for the 2012-13 season. While at UNH Regan appeared in 9 games, receiving most of his time senior year where he had a 2.87 GAA and a .907 SV%.
Jamie trained with Mike Buckley through out his college career gaining valuable insight on not only how to train hard but also right. Regan joins the team with a vast knowledge of the position and the game, he is excited to continue his hockey career in the coaching world.
Sean Maguire
GDS Instructor/ Former Student
smaguire@gdsgoalies.com
Sean was a prospect for the Pittsburgh Penguins when he joined Mike Buckley and the GDS family in 2013. Buckley was just hired by the Penguins as the “Goaltending Development Coach” and it was his job to help Sean stay on top of his game before he graduated to Pro Hockey. After training with GDS for a year, Sean started to understand the concepts and quickly noticed how effective they were. Coming from a small coastal town on the west coast of Canada, Sean never had refined goalie coaching from a young age. He was 17 when he met Jeff Battah, his very first goalie coach. Jeff taught him all he knew up to this point Often times when training an already-established goaltender it can be difficult to engrain new concepts or techniques into their game, but the GDS concepts are simple and forgiving, giving all likes of style a means to improvement.
Sean grew up in Powell River, British Columbia. He began his youth hockey career here, growing up, going to school, and learning the game with the same kids every year. Eventually, at the age of 15, Sean felt he needed a little more heat on the shots he faced. He decided to move away from home and play for the “Pursuit Of Excellence Hockey Academy” in Kelowna, BC. He then returned home to play Junior hockey (BCHL) for his home town, the Powell River Kings.
Sean payed two full seasons with the Powell River Kings, playing 46 regular season games. In his second season with the Kings, Sean was selected to play for Canada in the IIHF World Junior A Challenge. His team won gold and Sean was named a first team All-Star and awarded goaltender of the tournament posting a GAA. of 1.49 and a .942 SA%. Later on that season Sean was offered a scholarship to Boston University for the start of 2012-2013, and was drafted by the Pittsburgh Penguins in the Forth Round.
Sean started off at BU with high expectations and, at the end of the day, exceeded a lot of them. Throughout his three seasons, he was named Hockey East top performer eleven times. Additionally, Sean was also named 2016 Beanpot MVP and Eberly award winner after stopping 41 shots in a 1-0 overtime loss to Boston College. Sean left Boston University with second highest all-time in Career SA% of .922. Later that year, Sean signed with the Pittsburgh Penguins. There, he was fortunate enough to be a black ace for the 2017 Pittsburgh Penguins' Stanley Cup victory. Sean finished playing professional hockey in the Arizona Coyotes system in 2018.
Sean was coaching hockey long before he retired from the game himself. He just loves getting on the ice. If there’s someone wanting to get better, and willing to listen, he enjoys helping - especially when it comes to goaltending! Sean’s first official coaching position was with the Powell River Kings. He spent a year and half there before moving back to New England and rejoining GDS as a coach.
GDS Instructor/ Former Student
smaguire@gdsgoalies.com
Sean was a prospect for the Pittsburgh Penguins when he joined Mike Buckley and the GDS family in 2013. Buckley was just hired by the Penguins as the “Goaltending Development Coach” and it was his job to help Sean stay on top of his game before he graduated to Pro Hockey. After training with GDS for a year, Sean started to understand the concepts and quickly noticed how effective they were. Coming from a small coastal town on the west coast of Canada, Sean never had refined goalie coaching from a young age. He was 17 when he met Jeff Battah, his very first goalie coach. Jeff taught him all he knew up to this point Often times when training an already-established goaltender it can be difficult to engrain new concepts or techniques into their game, but the GDS concepts are simple and forgiving, giving all likes of style a means to improvement.
Sean grew up in Powell River, British Columbia. He began his youth hockey career here, growing up, going to school, and learning the game with the same kids every year. Eventually, at the age of 15, Sean felt he needed a little more heat on the shots he faced. He decided to move away from home and play for the “Pursuit Of Excellence Hockey Academy” in Kelowna, BC. He then returned home to play Junior hockey (BCHL) for his home town, the Powell River Kings.
Sean payed two full seasons with the Powell River Kings, playing 46 regular season games. In his second season with the Kings, Sean was selected to play for Canada in the IIHF World Junior A Challenge. His team won gold and Sean was named a first team All-Star and awarded goaltender of the tournament posting a GAA. of 1.49 and a .942 SA%. Later on that season Sean was offered a scholarship to Boston University for the start of 2012-2013, and was drafted by the Pittsburgh Penguins in the Forth Round.
Sean started off at BU with high expectations and, at the end of the day, exceeded a lot of them. Throughout his three seasons, he was named Hockey East top performer eleven times. Additionally, Sean was also named 2016 Beanpot MVP and Eberly award winner after stopping 41 shots in a 1-0 overtime loss to Boston College. Sean left Boston University with second highest all-time in Career SA% of .922. Later that year, Sean signed with the Pittsburgh Penguins. There, he was fortunate enough to be a black ace for the 2017 Pittsburgh Penguins' Stanley Cup victory. Sean finished playing professional hockey in the Arizona Coyotes system in 2018.
Sean was coaching hockey long before he retired from the game himself. He just loves getting on the ice. If there’s someone wanting to get better, and willing to listen, he enjoys helping - especially when it comes to goaltending! Sean’s first official coaching position was with the Powell River Kings. He spent a year and half there before moving back to New England and rejoining GDS as a coach.
Alec Marshall
GDS Instructor/ Former Student
amarshall@gdsgoalies.com
Alec, a long time student of Coach Buckley's, started training with GDS Goaltending at the age of eight. A native of Nashua, NH, he has worked as an instructor for GDS between lessons and summer camps since 2016. After spending the entirety of his youth career in Nashua, he then played his midget hockey with the Northern Cyclones where he was a league all-star. From there, Alec split his junior hockey career between the Eastern Hockey League's Seacoast Spartans and East Coast Wizards. In his final season with the Wizards, Alec set the EHL record for assists by a goaltender, while also earning an NCAA roster spot at Southern New Hampshire University for the fall of 2018. Primarily filling a backup role for his first two seasons, Alec registered a 1.64 GAA to go along with a .946 SV%, both marks that would rank 1st all-time in program history. Additionally, he earned honors such as NE10 Goaltender of the Week, SNHU Athlete of the Week, and NE10 Academic Honor Roll.
With the 2020-21 season being cancelled due to the Covid-19 pandemic, Alec took the opportunity to increase his course load and finish his degree a year early. Alec has chosen to hang up the skates and move forward with his coaching career. He recently graduated with a BS in Business Administration with a concentration in Sport Management. Alec looks forward to the next step in his hockey journey with GDS!
GDS Instructor/ Former Student
amarshall@gdsgoalies.com
Alec, a long time student of Coach Buckley's, started training with GDS Goaltending at the age of eight. A native of Nashua, NH, he has worked as an instructor for GDS between lessons and summer camps since 2016. After spending the entirety of his youth career in Nashua, he then played his midget hockey with the Northern Cyclones where he was a league all-star. From there, Alec split his junior hockey career between the Eastern Hockey League's Seacoast Spartans and East Coast Wizards. In his final season with the Wizards, Alec set the EHL record for assists by a goaltender, while also earning an NCAA roster spot at Southern New Hampshire University for the fall of 2018. Primarily filling a backup role for his first two seasons, Alec registered a 1.64 GAA to go along with a .946 SV%, both marks that would rank 1st all-time in program history. Additionally, he earned honors such as NE10 Goaltender of the Week, SNHU Athlete of the Week, and NE10 Academic Honor Roll.
With the 2020-21 season being cancelled due to the Covid-19 pandemic, Alec took the opportunity to increase his course load and finish his degree a year early. Alec has chosen to hang up the skates and move forward with his coaching career. He recently graduated with a BS in Business Administration with a concentration in Sport Management. Alec looks forward to the next step in his hockey journey with GDS!
GDS Summer Instructors
Casey Desmith - Pittsburgh Penguins, former UNH
Doug Carr - Pittsburgh Penguins Organizations, former UMass-Lowell
John Muse - Carolina Hurricanes, Former BC standout
Jeff Woods - Long time GDS instructor
Doug Carr - Pittsburgh Penguins Organizations, former UMass-Lowell
John Muse - Carolina Hurricanes, Former BC standout
Jeff Woods - Long time GDS instructor