#2 Brock Lesnar vs. CM Punk - SummerSlam 2013
This was a match that many fans had hoped to see when Brock Lesnar returned to WWE in 2012. CM Punk had become arguably WWE's best wrestler and was seemingly able to have excellent matches with almost anyone, size difference or not, so fans had high hopes for this.
Brock has the early advantage, due to the size difference. Punk kicks Brock down to his size and out of the ring. Brock takes back over for a while, frustrating Punk to the point that he bites Brock. They avoided each other’s finish and when Punk tried the GTS again, Brock countered into the Kimura Lock, which Punk reversed it into an armbar and triangle choke in a nice sequence.
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After some suplexes, Punk recovers and beats down on Brock with a chair until Paul Heyman takes it from him. Punk hits the GTS on Brock but Heyman interferes once again, breaking up the count. Punk counters an F-5 into a tornado DDT for another big near fall, and frustrated, applies the Anaconda Vise, only for Paul to break it up. Punk then slaps Paul with the Anaconda Vise, as Brock recovers and belts Punk with a chair, followed by an F-5 onto the chair to get the win.
There was a report at the time that the two received a standing ovation from the locker room following the match, and it wouldn't surprise me as it was an excellent match, easily one of the best of the year, SummerSlam history and in the careers of CM Punk and Brock Lesnar.