#1. Alexa Bliss is being controlled by The Fiend
Alexa Bliss was attacked by The Fiend two weeks ago on SmackDown when the former Champion locked in the Mandible Claw. The following week it made it appear as though Bliss had found The Fiend's weakness when she was the first person to prevent him from using the Claw.
Meet John Cena's dad HERE
Bliss has since been able to return to WWE TV and has stepped into the feud between the two men. Whether Strowman wants to admit it or not, Bliss is still his weakness and The Fiend is aware of this, which is why he targetted her in the first place.
Could The Fiend have only set Bliss free because he's still controlling her? After all he's found a way to keep Bray Wyatt in The Firefly Fun House and still control him when he's released and it's easy to believe he's doing the same to Alexa Bliss?
The Fiend doesn't need any help to defeat Strowman, but controlling the former Women's Champion and allowing her to strike first may make the job much easier for him.