#4. Former WWE Champion Brock Lesnar returns and wins the 2021 Men's Royal Rumble Match
Vince McMahon has been pushing for live fans to return for several months. He had reportedly hoped that they could attend the upcoming WWE Royal Rumble pay-per-view. As of this writing, it seems like this show will utilize the same format as WWE TLC, an event that aired from the ThunderDome without live fans.
The ThunderDome offers a unique replacement, but it can't make up for the lack of live fans. Surprise appearances don't feel as electric when WWE pipes in fake cheers. Naturally, Brock Lesnar, like other stars, doesn't want to return in an empty arena. But he'll probably come back sooner rather than later.
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Rumors have suggested that Lesnar will face Drew McIntyre at WWE WrestleMania this year. But championship rematch clauses aren't guaranteed anymore, so "The Beast Incarnate" might follow a different route to the title.
He could return at WWE Royal Rumble and win the match. This victory would allow him to challenge for the WWE Championship at the Showcase of the Immortals. (That prediction assumes that McIntyre can overcome Goldberg later this month.)