The most interesting battles for Penguins training camp

Photo by Gregory Shamus/Getty ImagesAs Labor Day passes for another milestone to get closer towards the start of hockey, what better time to circle back and remember some of the top battles that should be playing out for internal competition for the Penguins this fall?

The temporary Jake Guentzel replacement

When Sidney Crosby and Jake Guentzel are both healthy, as if by law they will most likely be playing together. Guentzel will be out for the first handful of games in the season that the team is optimistic won’t be too long, but it will be some number of games.

That leaves Mike Sullivan with a couple of choices for the top lines. The Pens could use two out of three of: Reilly Smith, Rickard…