#2 Brock Lesnar

Since losing the WWE Championship at WrestleMania 36 to Drew McIntyre, Brock Lesnar has been absent from WWE television. This is not a surprise considering The Beast wrestles in only the big PPVs or at Saudi Arabia shows.
With SummerSlam just over a month away, Brock Lesnar should feature on WWE television in the coming weeks, to set-up his next feud. It will be interesting to see whom Lesnar feuds with and faces at SummerSlam.
Did you know a top WWE Superstar just wrestled outside the company? More details HERE
There are quite a few options for Brock Lesnar at SummerSlam with the latest report stating that Lesnar could face off once again against Drew McIntyre. There's also been a lot of talk about Lesnar facing off against Bobby Lashley, which would be a dream match of sorts.
Lashley recently spoke about the prospect of facing Lesnar in WWE:
“I haven’t talked with Vince, but I think at one point in time, there was some talk about maybe teasing it and seeing where it went. But, at the time, he was knee-deep in a feud with Roman, and then Seth was coming behind him. They already had things lined up for him. I think if anytime, it is now. Now is a really good time."
If Lesnar is set to face McIntyre at SummerSlam, he could be at Extreme Rules to send a message to the Scottish Psychopath, who will face Dolph Ziggler at the PPV.