#1 Brock Lesnar vs Roman Reigns vs Samoa Joe vs Braun Strowman (WWE SummerSlam 2017)
Roman Reigns' greatest WWE SummerSlam match came in the main event of SummerSlam 2017.
Roman Reigns and Samoa Joe were battling it out to determine the number one contender for the WWE Universal Championship on Monday Night RAW before Braun Strowman attacked both men, resulting in a no contest.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
It was then decided by RAW General Manager Kurt Angle that Brock Lesnar would defend the Universal Championship against Reigns, Joe and Strowman in a Fatal 4-Way match at the biggest event of the summer.
Lesnar's advocate Paul Heyman later proclaimed that if Brock Lesnar were to lose the Universal Championship at SummerSlam, then he and Lesnar would leave WWE.
The Fatal 4-Way main event at SummerSlam was excellent, with all four Superstars coming close to winning the match on several occasions.
The closing moments saw Brock Lesnar counter a spear attempt by Roman Reigns into an F5 to retain the Universal Championship.