GDS COACHING STAFF
Mike Buckley
Founder/President
L.A. Kings Goaltending Coach
Mike Buckley is the Founder and President of Goaltending Development Services (GDS) and currently serves as the Goaltending Coach for the Los Angeles Kings.
A two-time Stanley Cup Champion and Olympic Gold Medalist, Mike has built an extensive career at the highest levels of hockey. Prior to joining the Kings, Mike spent several seasons with the Pittsburgh Penguins, where he was part of two Stanley Cup championship teams. During his professional coaching career, he has worked with and developed numerous NHL and AHL goaltenders, including multiple NHL and AHL All-Stars.
Mike founded GDS with the goal of creating a development system that combines elite technical instruction with the mental and competitive aspects of goaltending. His philosophy centers around developing the individual goalie rather than forcing every goaltender into the same mold, allowing athletes to build an effective and confident style of play.
Through his experience coaching at the NHL, AHL, international, and youth levels, Mike brings a unique perspective to every goaltender he works with. His continued involvement at the NHL level allows GDS athletes to learn from a coach who works every day with the world's best goaltenders.
Founder/President
L.A. Kings Goaltending Coach
Mike Buckley is the Founder and President of Goaltending Development Services (GDS) and currently serves as the Goaltending Coach for the Los Angeles Kings.
A two-time Stanley Cup Champion and Olympic Gold Medalist, Mike has built an extensive career at the highest levels of hockey. Prior to joining the Kings, Mike spent several seasons with the Pittsburgh Penguins, where he was part of two Stanley Cup championship teams. During his professional coaching career, he has worked with and developed numerous NHL and AHL goaltenders, including multiple NHL and AHL All-Stars.
Mike founded GDS with the goal of creating a development system that combines elite technical instruction with the mental and competitive aspects of goaltending. His philosophy centers around developing the individual goalie rather than forcing every goaltender into the same mold, allowing athletes to build an effective and confident style of play.
Through his experience coaching at the NHL, AHL, international, and youth levels, Mike brings a unique perspective to every goaltender he works with. His continued involvement at the NHL level allows GDS athletes to learn from a coach who works every day with the world's best goaltenders.
Steve Mastalerz
Vice-President/ Former Student
L.A. Kings Goaltending Development Coach & Scout
Steve Mastalerz is the Vice President of Goaltending Development Services (GDS) and currently serves as a Goaltending Development Coach and Scout for the Los Angeles Kings.
Steve’s connection to GDS began long before his coaching career. A longtime GDS goaltender, Steve developed through the program while playing at Kimball Union Academy, where he was named New England Prep Player of the Year. He went on to play four seasons at the University of Massachusetts before beginning his professional career, ultimately winning a Calder Cup with the Manchester Monarchs.
Following his playing career, Steve transitioned into coaching at UMass, where he helped develop some of the program’s top goaltenders. During his time with the Minutemen, he worked closely with Michael Hrabal, who earned three All-Hockey East selections, All-American honors, and was named Hockey East Player of the Year.
Steve’s journey from a GDS goalie to a professional player, college coach, and now NHL development coach provides him with a unique understanding of the complete goaltending development process. His experience allows him to connect with goaltenders at every stage while helping them understand what it takes to continue progressing toward their goals.
Vice-President/ Former Student
L.A. Kings Goaltending Development Coach & Scout
Steve Mastalerz is the Vice President of Goaltending Development Services (GDS) and currently serves as a Goaltending Development Coach and Scout for the Los Angeles Kings.
Steve’s connection to GDS began long before his coaching career. A longtime GDS goaltender, Steve developed through the program while playing at Kimball Union Academy, where he was named New England Prep Player of the Year. He went on to play four seasons at the University of Massachusetts before beginning his professional career, ultimately winning a Calder Cup with the Manchester Monarchs.
Following his playing career, Steve transitioned into coaching at UMass, where he helped develop some of the program’s top goaltenders. During his time with the Minutemen, he worked closely with Michael Hrabal, who earned three All-Hockey East selections, All-American honors, and was named Hockey East Player of the Year.
Steve’s journey from a GDS goalie to a professional player, college coach, and now NHL development coach provides him with a unique understanding of the complete goaltending development process. His experience allows him to connect with goaltenders at every stage while helping them understand what it takes to continue progressing toward their goals.
Ian Milosz
North Andover Head Instructor
Boston University Women's Goaltending Coach
Ian Milosz brings extensive playing and coaching experience to GDS, along with more than five years of experience working with goaltenders in the GDS program.
A former Boston College goaltender, Ian transitioned into coaching after his playing career and has quickly established himself as a highly respected college goaltending coach. Most recently, Ian spent two seasons at Boston College, where he played an important role in the development of Grace Campbell, helping her emerge as an All-Hockey East goaltender.
Ian now serves as the Goaltending Coach for the Boston University women’s hockey program, continuing to work with elite collegiate goaltenders and helping athletes develop the technical, tactical, and mental aspects of the position.
His five years with GDS have given him a deep understanding of the GDS positional system and development philosophy.
Ian combines his experience as a former college goaltender with his growing experience coaching at the Division I level, bringing a wealth of knowledge and perspective to the GDS staff and the goaltenders he works with.
Alec Marshall
Exeter Head Instructor/ Former Student
UNH Director of Goaltending Development
Spartans Performance Academy Goalie Director
Alec Marshall is a longtime GDS goaltender who has experienced the GDS development model firsthand from a young age. A New Hampshire native, Alec was born and raised in the state and has grown through the GDS program while pursuing his own path as a collegiate goaltender.
Alec continued his playing career at Southern New Hampshire University, while simultaneously developing his coaching career and building experience working with goaltenders at multiple levels. He currently serves as the Director of Goaltending at Spartans Performance Academy and was recently named the Director of Goaltending Development at the University of New Hampshire.
Alec’s journey from a young New Hampshire goaltender in the GDS program to a collegiate player and Division I goaltending coach gives him a unique perspective when working with developing goalies. He understands the process firsthand and knows the commitment, work ethic, and compete level required to continue moving forward.
Alec brings his experience as both a player and coach to GDS, helping the next generation of goaltenders develop their game while staying true to their own individual style of play.
Exeter Head Instructor/ Former Student
UNH Director of Goaltending Development
Spartans Performance Academy Goalie Director
Alec Marshall is a longtime GDS goaltender who has experienced the GDS development model firsthand from a young age. A New Hampshire native, Alec was born and raised in the state and has grown through the GDS program while pursuing his own path as a collegiate goaltender.
Alec continued his playing career at Southern New Hampshire University, while simultaneously developing his coaching career and building experience working with goaltenders at multiple levels. He currently serves as the Director of Goaltending at Spartans Performance Academy and was recently named the Director of Goaltending Development at the University of New Hampshire.
Alec’s journey from a young New Hampshire goaltender in the GDS program to a collegiate player and Division I goaltending coach gives him a unique perspective when working with developing goalies. He understands the process firsthand and knows the commitment, work ethic, and compete level required to continue moving forward.
Alec brings his experience as both a player and coach to GDS, helping the next generation of goaltenders develop their game while staying true to their own individual style of play.
Sean Maguire
L.A. Head Instructor/ Former Student
L.A. Kings Emergency Backup Goalie
Sean Maguire is a longtime member of the GDS family who has experienced the development process from every perspective—as a GDS goalie, professional player, college coach, and GDS coach.
Sean began his development as a GDS goaltender and was eventually drafted by GDS founder Mike Buckley and the Pittsburgh Penguins. He went on to play four seasons at Boston University before beginning his professional career in the AHL and ECHL.
Sean has been a GDS coach for more than seven years and previously served as the Director of Goaltending Development at the University of New Hampshire, where he worked with and helped develop numerous collegiate goaltenders.
Sean now serves as an Emergency Backup Goaltender for the Los Angeles Kings while continuing his work with GDS. He will also lead GDS development in Los Angeles, bringing the GDS philosophy and training approach to goaltenders on the West Coast.
Sean’s unique journey through GDS, college hockey, professional hockey, and collegiate coaching gives him an invaluable perspective on what it takes to develop as a goaltender. Having lived the GDS process himself, he understands the challenges and opportunities goaltenders face as they work toward the next level.
L.A. Head Instructor/ Former Student
L.A. Kings Emergency Backup Goalie
Sean Maguire is a longtime member of the GDS family who has experienced the development process from every perspective—as a GDS goalie, professional player, college coach, and GDS coach.
Sean began his development as a GDS goaltender and was eventually drafted by GDS founder Mike Buckley and the Pittsburgh Penguins. He went on to play four seasons at Boston University before beginning his professional career in the AHL and ECHL.
Sean has been a GDS coach for more than seven years and previously served as the Director of Goaltending Development at the University of New Hampshire, where he worked with and helped develop numerous collegiate goaltenders.
Sean now serves as an Emergency Backup Goaltender for the Los Angeles Kings while continuing his work with GDS. He will also lead GDS development in Los Angeles, bringing the GDS philosophy and training approach to goaltenders on the West Coast.
Sean’s unique journey through GDS, college hockey, professional hockey, and collegiate coaching gives him an invaluable perspective on what it takes to develop as a goaltender. Having lived the GDS process himself, he understands the challenges and opportunities goaltenders face as they work toward the next level.
Andrew LoRusso
Hooksett Head Instructor/ Former Student
A Peabody, MA native and long time student of Mike Buckley’s GDS, Andrew now joins our head instructing staff after an accomplished goaltending career. Learning from Mike Buckely at an early age of 8, Andrew grew up playing for several travel teams before taking over the net at MIAA Division 1 program, The St. Marys of Lynn Catholic High School. Named the number 1 out of the top 25 Massachusetts undergraduate goaltenders in the 15/16 and 16/17 seasons, Andrew went on to win the 2017 State Championship before playing three years with the New Hampshire Avalanche of the Eastern Hockey League.
Throughout the last half of Andrew’s career, he went on to play four years of Division 3 College Hockey at Becker College, Rivier University, and Western New England. He was then offered and signed contracts through two seasons of minor professional hockey between the FPHL and SPHL.
Andrew brings an abundance of energy and knowledge, which was all once taught to him through both Steve and Mike in past years. Andrew is fully committed to now teaching and developing the next generation of goaltenders in our North Andover and Hooksett locations.
Hooksett Head Instructor/ Former Student
A Peabody, MA native and long time student of Mike Buckley’s GDS, Andrew now joins our head instructing staff after an accomplished goaltending career. Learning from Mike Buckely at an early age of 8, Andrew grew up playing for several travel teams before taking over the net at MIAA Division 1 program, The St. Marys of Lynn Catholic High School. Named the number 1 out of the top 25 Massachusetts undergraduate goaltenders in the 15/16 and 16/17 seasons, Andrew went on to win the 2017 State Championship before playing three years with the New Hampshire Avalanche of the Eastern Hockey League.
Throughout the last half of Andrew’s career, he went on to play four years of Division 3 College Hockey at Becker College, Rivier University, and Western New England. He was then offered and signed contracts through two seasons of minor professional hockey between the FPHL and SPHL.
Andrew brings an abundance of energy and knowledge, which was all once taught to him through both Steve and Mike in past years. Andrew is fully committed to now teaching and developing the next generation of goaltenders in our North Andover and Hooksett locations.
Shane Starrett
South Shore Head Instructor/ Former Student
Northeast Academy Goalie Coach
Shane joins the GDS coaching staff as a former student. The Bellingham, MA native grew up playing for the South Shore Kings before attending Catholic Memorial High School in Boston, making the varsity team as an 8th grade student, then later transferring to South Kent School in Connecticut. After high school, Shane played briefly in the USHL before finishing up his junior career in the USPHL with the South Shore Kings. From there, Shane became a student of Mike Buckley and GDS at age 20 and earned a commitment to the United States Air Force Academy.
At the Academy, Shane was a 2-time team MVP, one time Atlantic Hockey goalie of the year, first team all-conference and all-rookie team his freshman year, third team all conference and playoff MVP his sophomore year. He led his team to an Atlantic Hockey championship his sophomore year allowing just 2 goals in 4 games and leading them to an NCAA tournament elite 8 finish, and Air Force’s highest ever national rank at #10 ranked in the nation. He finished his academy career with a 1.96 GAA and a .924 Save Percentage, both all time Air Force records before signing with the Edmonton Oilers, the first Air Force player to ever sign an NHL contract from the school.
Shane went on to play 7 seasons of professional hockey: 3 years with the Oilers, 1 year with the Wilkes-Barre/Scranton Penguins, 1 year with the Coachella Valley Firebirds, 1 year with the Providence Bruins, and 1 year in the EIHL in the United Kingdom with the Glasgow Clan. He played in 140 ECHL games, 64 AHL games, and 53 Games in Europe totaling 257 professional games, as well as 3 NHL pre-season games and NHL camp experience. He was an ECHL all-star in 2017-18 and an AHL second team all-star and all-rookie selection in 2018-19. Shane brings 7 years of professional experience and knowledge, as well as over 10 years of working with GDS to the coaching staff.
South Shore Head Instructor/ Former Student
Northeast Academy Goalie Coach
Shane joins the GDS coaching staff as a former student. The Bellingham, MA native grew up playing for the South Shore Kings before attending Catholic Memorial High School in Boston, making the varsity team as an 8th grade student, then later transferring to South Kent School in Connecticut. After high school, Shane played briefly in the USHL before finishing up his junior career in the USPHL with the South Shore Kings. From there, Shane became a student of Mike Buckley and GDS at age 20 and earned a commitment to the United States Air Force Academy.
At the Academy, Shane was a 2-time team MVP, one time Atlantic Hockey goalie of the year, first team all-conference and all-rookie team his freshman year, third team all conference and playoff MVP his sophomore year. He led his team to an Atlantic Hockey championship his sophomore year allowing just 2 goals in 4 games and leading them to an NCAA tournament elite 8 finish, and Air Force’s highest ever national rank at #10 ranked in the nation. He finished his academy career with a 1.96 GAA and a .924 Save Percentage, both all time Air Force records before signing with the Edmonton Oilers, the first Air Force player to ever sign an NHL contract from the school.
Shane went on to play 7 seasons of professional hockey: 3 years with the Oilers, 1 year with the Wilkes-Barre/Scranton Penguins, 1 year with the Coachella Valley Firebirds, 1 year with the Providence Bruins, and 1 year in the EIHL in the United Kingdom with the Glasgow Clan. He played in 140 ECHL games, 64 AHL games, and 53 Games in Europe totaling 257 professional games, as well as 3 NHL pre-season games and NHL camp experience. He was an ECHL all-star in 2017-18 and an AHL second team all-star and all-rookie selection in 2018-19. Shane brings 7 years of professional experience and knowledge, as well as over 10 years of working with GDS to the coaching staff.