#2 Goldberg
Goldberg could be an ideal choice to face Roman Reigns at the biggest show of the Summer. A match between Goldberg and Roman Reigns could be a dream match as the two men have never faced each other. While Goldberg was one of the most dominant men in his prime, Reigns is certainly the biggest full-time Superstar of the company and the match could garner the attention of WWE Universe.
Goldberg's last match was at Super ShowDown where he faced the Undertaker. Though it was certainly a dream match, it turned into a disaster following several botches. The former WCW Champion was busted open and he failed to deliver a proper Jackhammer to the Phenom. Therefore, Goldberg will be eager to prove his doubters wrong if he decides to grace the ring at SummerSlam.
Goldberg has expressed his interest to face Reigns in the past. WWE could also promote the match as 'Spear vs Spear' match. Considering both men use the move as part of their arsenals, it will be interesting to see whose Spear is more superior. It might not be a lengthy match but Reigns and Goldberg could tear the house down at SummerSlam.