Grimble is in the mix at tight end because of an injury to Ladarius Green .
The Steelers ' Xavier Grimble , right , congratulates Sammie Coates after he pulled in a pass for a touchdown against the Saints in last week 's preseason game .
Xavier Grimble is in the mix at tight end because of an injury to Ladarius Green .
The Steelers ' Xavier Grimble , right , congratulates Sammie Coates after he pulled in a pass for a touchdown against the Saints in last week 's preseason game .