Nearly 20 Steelers won’t play in Saturday’s preseason opener in Jacksonville. A few of them are injured, but the others are entrenched starters and don’t need the preseason to get ready for the regular season. Most importantly, the Steelers don’t need to expose their stars to injury risk in meaningless games.

For the rest of the Steelers’ 90-man roster, preseason games are proving grounds. The practices are important in the evaluation process, but the games are weighed more by the coaches who have 17 more days until they have to trim the roster to 53.

Undrafted rookies can earn spots on the 53-man roster and draft picks and newly acquired veterans can cement their roles on the team.

Here’s a look at some new Steelers and some veterans with much to prove this preseason:

1. Yahya Black

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