#6 Randy Orton
Although Randy Orton and Brock Lesnar began their WWE careers at approximately the same time, they'd never faced off in singles competition in pay-per-view.
Until SummerSlam 2015 swung by, that is.
As expected, Lesnar took Orton to Suplex City, dominating most of the match with heavy knees to the midsection, shoulder tackles against the turnbuckle and German Suplexes aplenty.
Never one to be counted out, however, Orton struck back momentarily with an RKO on the table before lining Lesnar up for the infamous punt to the head.
Realising that he was this close to having his lights shut out, Lesnar came unhinged, taking Orton down before mounting him and unleashing a barrage of elbows that cut him open.
As Orton lay in a pool of his own blood, with a collection of WWE officials huddled over him in concern, Lesnar strode to the back with his reputation cemented as a legitimate fighter - and not just a sports entertainer.
Sh*t had just gotten real in the WWE.
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