Bruind 3rd-round pick Grzelcyk

The second day of the draft saw the Bruins use five picks, including one acquired in a draft-day trade with Tampa Bay, to select would-be prospects in Pittsburgh today.

Headlining the group was Charlestown, Mass., native Matt Grzelcyk, whose father actually works on the bull gang at TD Garden.

Grzelcyk, taken in the third round, 85th overall, is headed to Boston University this fall after spending the last two years with the USNTDP. He’s a 5-foot-9, 171-pound defenseman who compares favorably to David Warsofsky and Matt Hunwick. He totaled 2-20-22 in 56 games last season.

The Bruins had two fifth-round picks — their own (145) and the one they picked up from Tampa Bay (131) in the Benoit Pouliot trade. At 131, they picked up Seth Griffith, a 19-year-old forward from London of the Ontario Hockey League, where he played with Bruins prospect Jared Knight on a team that advanced to the Memorial Cup championship game last season. In 68 games, the 5-foot-9, 180-pound Griffith posted 45-40-85 totals. He was passed over in the 2011 draft.

With pick 145, Boston took 6-foot-2, 201-pound right winger Cody Payne. The 18-year-old is known for his grit, which he used to accumulate 107 penalty minutes last season with Plymouth of the OHL. He also posted 5-11-16 totals in 60 games for Plymouth and Oshawa.

The Bruins stayed within their family in the sixth round, as they used the 175th pick to select Matthew Benning, the nephew of Bruins assistant general manager Jim Benning. The younger Benning is a 6-0, 218-pound defenseman who posted 4-14-18 totals for Spruce Grove of the Alberta Junior Hockey League last season.

With their last pick, the Bruins took Colton Hargrove in the seventh round (205 overall). Hargrove is a 6-foot-3, 209-pound winger who has been playing for Fargo of the United States Hockey League. In 54 games last season, he posted 16-22-38 totals. He will turn 20 Monday.