Everything was going so well, Randy Orton and Brock Lesnar were having a fine match in their main event of SummerSlam.
Lesnar was doing his typical thing of suplex-ing his opponent all over the ring instead of actually bothering to do any wrestling and Orton got in an RKO to show what he can do as well.
At the beginning, it even looked like Lesnar was doing his best to not hurt Orton, German Suplex-ing Orton very carefully onto his back, so to avoid Orton's notoriously damaged shoulders. And then things turned, and it got very bad, and bloody, very fast.
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After a high-impact affair containing several RKO's and F5's, Lesnar took off his MMA gloves and went full Beast Mode on his opponent.
Lesnar got in the full mount and just started teeing off on Lesnar, first with punches and then with his elbows - one of which caught Orton flush on the forehead and seemingly knocked him out cold. Seriously, Orton went limp.
Blood started gushing out of The Viper's forehead and the match was called off, with Lesnar being awarded the win via TKO.
You can watch the brutal moment here...
Orton was treated by two medics as he lay on the canvas with a disturbing pool of blood emanating round him. The WWE later released a statement saying that Orton required 10 stitches to close up the wound on his forehead.
Here is how Orton's head ended up looking when some of the blood was wiped off...
Did Brock Lesnar go off script when he landed those elbows on Randy Orton? Tell us what you think in the comments below...