#4 Shinsuke Nakamura
The King of Strong Style lost the US title to Rusev and then won it back at Royal Rumble, only to lose it to R-Truth on SmackDown Live! Now, he is involved in a weird storyline where he has partnered with Rusev to attack R-Truth.
Nakamura has had a battle with AJ Styles and Daniel Bryan in WWE and it would have been great to see him inside the chamber – something he has never been involved in. The former NJPW star would have been the best replacement but would have been the heel in the match despite replacing a face, Mustafa Ali.
The only possible reasons why WWE did not opt to pick him would be his contract status. Reports suggest that Shinsuke Nakamura's contract is up after WrestleMania and there have been no negotiations between the parties.