#3 Brock Lesnar vs. Roman Reigns (WrestleMania 34)

Few people were interested in this rematch from the time they knew it was coming after Goldberg won the title from Kevin Owens all the way back at Fastlane 2017. Even with that said, it was hard to imagine this would turn into the disaster that it became, given that their previous WrestleMania match was very good.
Fans were having none of it as soon as the bell rang, being more interested in beach balls and Rusev Day than the action going on in the ring, but it's important to note that even without the fan hostility, the match would still be terrible.
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A psychological mess from the get-go, there was nothing but four moves and half a dozen F5 kickouts. Both guys didn't look interested to be there. Instead, they looked like they just wanted to go through the motions. Lesnar busted Reigns' head open the hard way and no one cared. A final F5 ended the pointless affair.
Truly one of the worst WrestleMania main events of all time.