Pittsburgh Penguins forward Conor Sheary will miss at least a month with what head coach Mike Sullivan would only describe as an "upper-body" injury.

Sheary ranks third on the Penguins in goals (17) and fourth in points (35). He'd been clicking with Sidney Crosby and Bryan Rust since being bumped up to Pittsburgh's top line earlier in the season.

The 24-year-old had scored nine goals in nine games before collecting just a single point over his last three contests.

Sheary is in his second NHL season, both with the Penguins who signed him after he went undrafted out of the University of Massachusetts-Amherst.