Some key players returned from injury for the Green Bay Packers' practice on Tuesday. AdvertisementAdvertisement AdvertisementThe Packers won't practice Wednesday to travel for their preseason opener against the Pittsburgh Steelers on Thursday. Whether that applies to players who just recently returned from injury is unclear. In last year's preseason opener, the offensive starters played 12 snaps while the defensive starters played 10 snaps. This article originally appeared on Packers Wire: Key Packers return from injury ahead of Thursday's preseason opener