Another match added to SummerSlam will be a number one contender’s bout for the WWE Championship and will pit former champion Sami Zayn taking on Finn Balor.

The main event of Smackdown featured a match between Balor, Royce Keys, Trick Williams, and Damian Priest to determine who will face Zayn at SummerSlam.

While Keys seemingly had the match won, Jacob Fatu interfered and attacked Keys, allowing Balor to recover and hit a Coup de Grace on Priest for the pinfall victory over his former Judgment Day team mate.

Zayn, who held the title for less than 10 days, advanced to SummerSlam by the order of General Manager Adam Pearce, who informed Zayn that if he wants a rematch, he needs to earn it.