2009-10: Doyle Somerby skated for St. Mary’s High School in Lynn, Massachusetts. He finished with 2 goals and 3 assists in 24 games. Seeded fourth entering the Massachusetts Division I North tournament, St. Mary’s finished 15-8-1 after falling to Arlington Catholic in the tournament championship game.
2010-11: Somerby transferred to Kimball Union Academy for his sophomore season. In 33 games he scored 2 goals with 4 assists. Kimball Union finished 25-7-4, losing to Kent in overtime in the New England Prep School League tournament.
2011-12: Somerby had a strong junior season at Kimball Union as the Wildcats captured the New England Prep School League championship. He scored 1 goal with 13 assists in 31 games; playing alongside highly-regarded freshman Jonathon MacLeod. Somerby was selected by Muskegon in the sixth round (77th overall) of the 2012 USHL Entry Draft. He committed to playing college hockey at Boston University in 2013-14. Somerby was ranked 99th amongst North American skaters in the Central Scouting final rankings and was selected by the Islanders in the fifth round (125th overall) in the 2012 NHL Draft.
2012-13: Somerby joined the USHL’s Muskegon Lumberjacks following his senior season of prep school hockey. He scored 2 goals and was an even plus/minus with 6 penalty minutes in 10 USHL games. The Lumberjacks finished fourth in the Eastern Conference but Somerby did not play in the playoff series against eventual Clark Cup champion Dubuque. He was a team captain as a senior at Kimball Union, which entered the Stuart/Corkery Tournament as the top seed but lost 4-1 to Gunnery in the quarterfinals. Somerby finished the prep season with 4 goals and 18 assists in 30 games.
2013-14: Somerby skated in 34 games for Boston University in his freshman season. Teamed with fellow freshman Dalton MacAfee on the third pairing for the Terriers, he scored 1 goal with 3 assists and was minus-12 with 49 penalty minutes. Boston University finished ninth in Hockey East and lost to Notre Dame in a first round playoff game.
2014-15: Somerby provided sound, steady defense on the blueline for Frozen Four runner-up Boston University in his sophomore season. Skating in 39 of 41 games for the Terriers, he scored 1 goal with 6 assists and was +8 with 45 penalty minutes. Boston University dominated college hockey much of the year, capturing the Hockey East regular season and playoff titles. The Terriers won eight straight games heading into the Frozen Four championship game before falling to Hockey East rival Providence, 4-3.
Somerby is a big, no-frills defenseman who skates well for his size. After converting from forward to defense prior to his college career, Somerby showed some playmaking ability at the prep school level but for the most part so far has been pretty focused on defending while at Boston University. Still somewhat of a long-term project at this point, he has some interesting upside if he can continue to improve his overall skill level.
Somerby is in his junior season at Boston University in 2015-16 and has made some big strides in his third season. Still a force on the defensive end he has also scored some and is contributing in all three zones. The Islanders are fairly deep in defense prospects but Somerby's combination of size and mobility are rare . He figures to spend time at the minor league level once he graduates but could be a solid middle pairing defenseman in the NHL.