2008-09: Troy Grosenick appeared in 24 games as a backup to 19-year-old Mike Johnson in his first season with the USHL’s Cedar Rapids RoughRiders. He was 13-5-4 with 1 shutout and had a 2.33 goals against and .910 save percentage. Cedar Rapids finished second in the Eastern Conference and lost to eventual Clark Cup champion Indiana in the first round of the playoffs. Grosenick made one playoff appearance — stopping 5 of 7 shots in 38 minutes of action.
2009-10: Grosenick took over as the starter for Cedar Rapids in his second season. He was 26-14-2 with 4 shutouts in 44 regular season games and had a 2.63 goals against and .902 save percentage. The RoughRiders finished second in the Eastern Conference and again lost to Indiana in a five-game playoff series. Grosenick was 2-1 with 1 shutout and had a 1.88 goals against and .949 save percentage before suffering a knee injury in Game 4. In March 2010 he committed to playing college hockey at Union College in 2010-11.
2010-11: Grosenick appeared in three games for Union College as a freshman. With junior Keith Kinkaid (New Jersey) entrenched as the Dutchmen starter, Grosenick had 1 tie and had a 2.12 goals against and .897 save percentage in 84 minutes of action.
2011-12: Grosenick assumed the starting goalie role for Union College as a sophomore. In 34 games he was 22-6-3 with 5 shutouts and had a 1.65 goals against and .936 save percentage. Union won the ECAC Hockey regular season and playoff championships and defeated Massachusetts-Lowell, 4.2, in the NCAA East Regional final to reach the Frozen Four. The Dutchmen lost to Ferris State, 3-1, in a Frozen Four semifinal game.
2012-13: Grosenick signed a one-year entry-level contract with San Jose as a free agent following his junior season after back-stopping Union College to an ECAC Hockey playoff championship and the NCAA East Regional Final. He was 18-11-5 in 34 games for the Dutchmen and had a 2.12 goals against and .926 save percentage. Union won the ECAC Hockey playoff championship after finishing fourth in the regular season and defeated defending national champion Boston College before falling to Quinnipiac in the NCAA East Regional final. Grosenick signed a two-year contract with San Jose in July 2013.
2013-14: Grosenick played in 35 games for San Jose AHL affiliate Worcester in his first pro season. He was 18-4 with 2 shutouts and had a 2.62 goals against and .903 save percentage. The Sharks missed the AHL playoffs after finishing fourth in the Atlantic Division.
2014-15: Grosenick made his NHL debut in two November games for San Jose — stopping all 45 shots he faced in a 2-0 win over Carolina in his NHL debut. He did not fare as well two nights later, allowing 3 goals on 13 shots in a 4-1 loss at Buffalo. An upper body injury kept him out of the lineup before he was returned to AHL affiliate Worcester in mid-December. Grosenick was 20-13-1 with 1 shutout and had a 2.63 goals against and .906 save percentage in 36 AHL regular season games. He appeared in two playoff games in the Sharks’ first-round series against Hershey, starting Game 3 and earning the team’s only win when he stopped 27 of 28 shots in a 4-1 victory. Grosenick was re-signed by the Sharks to a two-year contract as a restricted free agent in June 2015.
Grosenick is a battler. He is not the most structurally sound goaltender, and his rebound control comes under much scrutiny, especially his blocker control and rebounds with high shots. The strength of his game is his athleticism and quickness and he has an incredible work ethic. His left glove is above average, and his post play is savvy. Grosenick's development has been hampered by a series of leg injuries but they should not effect his long-term health. He sometimes will play a little too deep in his net, being forced to make an acrobatic save because he was out of position.
Grosenick enters his third pro season with the Sharks' organization in 2015-16. Behind recently-acquired Martin Jones and Alex Stalock on the San Jose depth chart heading in to training camp, he will likely skate for San Jose's new AHL affiliate, the San Jose Barracuda. Grosenick has shown steady progress and has the potential to play at the NHL level. At 26-years-old he is one of the older goalies in the Sharks' system.