Brock Lesnar surprised and delighted fans at WWE SummerSlam Aug. 3 as he returned to the ring to face his wrestling foe, John Cena. Here's how the WWE kept his appearance a huge surprise.

Following his surprise return at SummerSlam, here are three opponents Brock Lesnar must face if he is back in WWE for the long haul.

Brock Lesnar’s surprise comeback at SummerSlam stunned WWE fans and disrupted John Cena’s emotional farewell tour. The return sets the stage for a final clash between two of wrestling’s biggest stars.