2009-10: Sean Maguire skated for the North Island Silvertips in the British Columbia midget major league. Sharing the goaltending duties with Kolding Larson, he skated in 20 games for the fifth-place Silvertips – who earned their first playoff berth.
2010-11: Maguire had a strong first season for the BCHL’s Powell River Kings as a backup to Quinnipiac University recruit Michael Garteig. He played in 15 games for the Kings and was 10-3 with two shutouts and had a 2.50 goals against and .903 save percentage. Powell River dominated the Coastal Division and reached the BCHL finals against Interior Division champion Vernon. Maguire made two appearances in relief of Garteig during the playoffs; allowing 1 goal on 16 shots in 44 minutes of action.
2011-12: Maguire had a breakout season – taking over as the starter in Powell River, backstopping Canada West to a championship in the 2011 U19 World Junior A Challenge, and committing to playing college hockey at Boston University in 2012-13. In 31 games for Powell River he was 17-12-1 with three shutouts and had a 2.33 goals against and .913 save percentage. In four games at the WJAC he was 3-1 with a 1.49 goals against and .942 save percentage. Canada West defeated Canada East in the championship game. Ranked 28th amongst North American goalies in Central Scouting’s final rankings prior to the 2012 NHL Draft, Maguire was selected by the Penguins in the 4th round (113th overall).
2012-13: Maguire appeared in 21 games for Boston University as a freshman; starting all four games in the Hockey East tournament. Splitting the goaltending chores with fellow freshman Matt O’Connor, he finished the year 13-8 with 4 shutouts and had a 2.54 goals against and .926 save percentage. Boston University finished in a three-way tie for third in Hockey East and reached the championship game in the league tournament, falling to regular season champion Massachusetts-Lowell, 1-0. Maguire stopped 28 of 29 shots in the loss to the River Hawks.
2013-14: Maguire skated in 16 games for Boston University in his sophomore season — splitting time with Matt O’Connor before suffering a season-ending injury. In 16 games he was 3-12 with a 2.90 goals against and .919 save percentage. Boston University finished ninth in Hockey East and lost to Notre Dame in a first round playoff game.
2014-15: Maguire missed the entire season — leaving Boston University to recover from an upper-body injury.
2015-16: Maguire signed a two-year entry-level contract with Pittsburgh in April 2016 following his junior season at Boston University and made his pro hockey debut with the AHL’s Wilkes-Barre/Scranton Penguins. Magure stopped all four shots he faced in 13 minutes in a relief appearance in his only game with the Penguins. Returning to Boston University after a one-year hiatus, he played in 25 games for the Terriers, sharing the goaltending chores with sophomore Connor LaCouvee. Maguire was 13-9-1 with one shutout and had a 2.41 goals against and .920 save percentage. Boston University finished tied with Massachusetts-Lowell for fourth in Hockey East and received an at-large bid to the NCAA West regional after being swept by the River Hawks in the conference quarterfinals. Denver defeated the Terriers, 7-2, in the regional semifinals.
Sean Maguire is a hybrid goaltender who possesses a solid frame and very good overall natural talent. He is athletic with good lateral movement, but he also has a calm demeanor. Maguire has a tendency to maybe overplay the puck or scramble around too much in his crease. He is considered raw at this point, but has the size and athleticism to potentially develop into an NHL caliber goaltender.
Maguire signed an entry-level contract with the Penguins after playing for Boston University in the 2015-16 season. Having put his health issues behind him, he will begin the process of climbing up the pro ranks, likely starting the 2016-17 season either in the AHL or with the ECHL's Wheeling Nailers. The Penguins organization has some outstanding goalie prospects in Jeff Zatkoff, Matt Murray and Tristan Jarry so Maguire will have his work cut out for him in challenging for an NHL roster spot.