5 big reasons why Vince McMahon won't allow Seth Rollins to beat Brock Lesnar at SummerSlam 2019

#1. To build to a WrestleMania 36 retirement match

Lesnar suffered a crushing defeat at WrestleMania 36

There have been rumours that went around in May that Brock Lesnar reportedly discussed the idea of a retirement match at WrestleMania 36. Now, we're not stating this to be a fact, but simply putting it out there as a possibility as to why Rollins may not win this coming Sunday at WWE SummerSlam 2019.

The idea is that Brock Lesnar may be calling it quits at the grandest stage of them all at Tampa next year. If he does, then it's a no-brainer that WWE will make him main event the PPV.

And if it is, in fact, his final run with the company, you can be assured that WWE will go all guns blazing to utilise him as much as they possibly can while he's still around. This may mean an extensive run with the Universal title that will culminate at WrestleMania 36 - where he will supposedly retire.