Partial Source: Pwinsider
UPDATE: According to sources, Seth Rollins was not injured on RAW last night. Rollins was said to be selling the knee like a pro, and almost doing it too well because many thought that he was really injured. So much so that some of the WWE camera crew kept away from Rollins after the spot because they thought he was seriously injured.
The injury angle was designed to remove him from the finish of the handicap match so that WWE could focus on the four men involved in the Battleground main event.
ORIGINAL: Seth Rollins may have been injured during his match in the main event of WWE RAW on Monday night. According to live reports, Rollins didn’t get up after getting hit by a clothesline from Roman Reigns and was seen holding his knee.
Rollins wasn’t shown on screen for the rest of the match and the referee threw up the infamous “X” signal, after which Rollins was tended to by the WWE medical staff.
More on this as it becomes available.