Triple H vs. Batista
A lot of people thought that this match was doomed when Triple H was hurt at Crown Jewel, but his healing rate is herculean. He'll do all he can to be able to have another match at WrestleMania.
Some people feel a factor that might impede this match from occurring is the fact that Batista recently signed on to appear in the Dune movie reboot.
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Filming is set to start in February, but he would only need to appear a couple times before April in order to set up a potential match.
The seeds have already been planted and WWE could use its loads of footage to build video packages to hype the feud.
Simply put - Triple H can heal fast, Batista wants a proper send-off from active WWE duty against The Game and the match can still happen.
Let's also not forget that Avengers: Endgame also comes out at the end of April. Just think of the publicity and advertising WWE would be able to take advantage of in building the match.
Triple H did just get cleared to resume training, so I'd be surprised if this match didn't go down in April. If it doesn't, they could always run the match at SummerSlam later in the year.