2008-09: Harry Zolnierczyk skated in 31 games as a sophomore at Brown, seeing limited ice time due to injury. His first career goal was a game-winner in an ECAC playoff game at Harvard and he finished the season with 1 goal and 2 assists and was -13 with 30 PMs. Brown finished last in ECAC Hockey; winning five games all season.
2009-10: Zolnierczyk was the second leading scorer for Brown as a junior. registering 13 goals and 20 assists in 37 games. He was -8 with 78 PMs as Brown finished 11th in the 12-team ECAC Hockey league. The Bears played their best hockey at the end of the season; knocking off regular season champ Yale in a three-game series and advancing to the league's third place game.
2010-11: Zolnierczyk signed a free-agent, entry-level contract with the Flyers in March 2011 and made his pro debut with AHL Adirondack after a memorable senior season at Brown. In 16 AHL games he scored 3 goals with 2 assists and 37 PMs and was -4 on a Phantoms team that missed the playoffs. Zolnierczyk led Brown in points and penalty minutes and was named Ivy League Player of the Year despite the Bears' ninth-place finish in ECAC Hockey. Zolnierczyk scored 16 goals with 15 assists and was +2 with 128 PMs in 30 games. Six of his 16 goals were scored on the power play.
2011-12: Zolnierczyk made the Flyers out of training camp – skating nine shifts in the Flyers' October 18th game at Ottawa – and appeared in 37 NHL games after being re-called in November while shuffling between Philadelphia and AHL affiliate Adirondack in his first pro season. He scored 3 goals with 3 assists and was minus-11 with 35 penalty minutes; averaging 7:42 minutes of ice time with the Flyers. Zolnierczyk scored 8 goals with 13 assists and was minus-10 with 37 penalty minutes in 39 AHL games with the Phantoms. He was re-called by the Flyers for the NHL playoffs but did not appear in any games.