Brock Lesnar returns to WWE and attacks Roman Reigns.

Roman Reigns retained his Undisputed WWE Universal Title after defeating Matt Riddle by delivering a spear on this Friday's edition of Smack Down. However, after the fight, the 'Tribal Chief' was surprised to see the return of Brock Lesnar.

The former member of The Shield celebrated in the ring amid boos from the fans. However, the entrance music of the 'Beast Incarnate' played, and he entered the arena, awakening the frenzy of the audience.

Lesnar, wearing a cowboy hat, entered the ring and extended his hand to the 'champion, who returned the greeting, but it was all a trap. The 'Beast' hit 'Big Dog' with an F5 and then applied the same move to The Usos, who tried to interfere.

Smack Down ended with Brock in the ring. Meanwhile, Roman Reigns left the stage with the help of Paul Heyman, who also expressed concern.

WWE confirms Brock Lesnar vs. Roman Reigns for SummerSlam

After the edition of the blue brand, the company confirmed the Brock Lesnar vs. Roman Reigns for the Undisputed WWE Universal Title at SummerSlam (July 30) in a match where the last fighter standing wins.

It's important to mention that the last time they faced each other was at Wrestlemania 38 where the 'Tribal Chief' emerged victorious and unified the titles.