#1: Brock Lesnar makes an appearance
Brock Lesnar's current status with the WWE is up in the air, but given the fact that the WWE has just signed a mega-money deal with Fox, it seems unlikely that we won't be seeing the former Universal champion back on our screens in the near future.
Lesnar was last seen for the WWE at SummerSlam, where he finally dropped his Universal Title to Roman Reigns. Lesnar has since joined the tradition of never getting a rematch for the belt, and it seems mad that the beast incarnate wouldn't want a chance to get it back.
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Lesnar doesn't have to involve himself in the match on Sunday night, but having him make his presence felt at the end of the match between Strowman and Reigns would be a nice way to remind the champion that he is waiting in the wings.