#1 Goldberg vs Roman Reigns
When Goldberg was inducted into the WWE Hall of Fame, he never outright said that he's retiring, but there wasn't an obvious scenario for him to make a return to the ring if he decided to do so.
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But thanks to WWE's deal with Saudi Arabia, they can now pay guys like Goldberg, who's wrestling on next week's show, to come back and do big matches. So after his big match with The Undertaker at Super ShowDown, it could be time to book the former WCW megastar against Roman Reigns.
Clearly the match wouldn't end up being a 30-minute instant classic, but it'd be a huge match that would be short, physical, and hard-hitting. In fact, the two could have the same type of match that Goldberg had with Brock Lesnar back at WrestleMania 33.
In short, if Goldberg has a match or two left in him, then at least one of them should be against Roman Reigns.