According to a live report posted over at F4WOnline.com, CM Punk appeared to have suffered some type of injury in a match that saw him team with Daniel Bryan against Luke Harper and Erick Rowan.
When the match was over, which saw Punk and Bryan get the win, CM Punk stayed down in the ring and was checked on by both Daniel Bryan and the referee. Punk finally made it to his feet, and appeared ok as he exited the ring about 2 minutes before Bryan did, as Bryan was celebrating with fans.
The report notes the CM Punk injury was confirmed to be legit, but it appears as if it's not serious enough that he will miss any ring time.
Additionally, John Cena appeared to have tweaked his leg during his main event match against Alberto Del Rio, but the injury might have been a part of the match story line. We reported earlier today that Cena is indeed working through quite a bit of pain on the current tour, so it's possible tonight's injury was legit.