#1 Kevin Owens

Did Kevin Owens forget about the man he's been feuding with for the entire summer (seriously they started feuding in April)? Braun Strowman has done more to hurt Kevin Owens than anyone else on the roster. Strowman has bullied Owens. He's taken every opportunity to hurt KO in one way or another.
Strowman has hit Owens with numerous vicious shoulder tackles, with a powerslam onto a ladder, thrown him off a 20-foot ladder into a table, knocked KO (who was in a port-a-potty) off of the stage, thrown him off of a steel cage into an announce table, and has chokeslammed Kevin Owens on the ring apron.
Breaking Vince Russo and Jim Cornette update HERE.
Braun Strowman even drove Kevin Owens to the point that he briefly quit WWE (after losing to Seth Rollins). Why on earth would Kevin Owens want to help Braun Strowman? Owens was even shown leading the charge to attack the Shield. It would've made more sense for KO to help The Shield than it is for him to help Braun Strowman. Kevin Owens has recently been suffering from bad booking and him overlooking what Strowman has done to him may be the worst of them all.
One wrong move ended Big E's career - Watch Here!