Penguins F Kevin Hayes (upper body) week-to-week

(Photo credit: Nick Turchiaro-Imagn Images)
The Pittsburgh Penguins placed forward Kevin Hayes on injured reserve Monday with an upper-body injury.

The move is retroactive to his last appearance on Nov. 5, meaning he could return Wednesday against Detroit.

Head coach Mike Sullivan told reporters on Sunday, however, that Hayes is considered week-to-week.

Hayes, 32, has three goals and one assist through 14 games in his