For those of you out there who don't understand this and think it's just the end of the Brock Lesnar train in MMA, that's incorrect. After each fight night, fighters are examined and tested and then evaluated. Doctors then assess how long each fighter must sit out before he can fight again.
Yes, it's a "suspension" but not in the way we typically associate that word to professional sports.
Lesnar was beat down rather severely by Velasquez, and had a major cut opened his left eye, which led to long medical suspension.
Patrick Cote, Court McGee, Diego Sanchez and Jake Shields also received six-month medical suspensions. In the case of Shields, that's not as bad as you may think for the UFC newcomer and former Strikeforce champion.
His next fight is supposed to be against the winner of Georges St-Pierre vs. Josh Koscheck at UFC 124 in December, per the decree of UFC president Dana White. Map that out a bit and you'll see that Shields' next fight wouldn't have happened until April at the earliest anyway.