WWE No Mercy 2017 will be WrestleMania come early. At least at the top of the pay-per-view card. Braun Strowman will challenge Brock Lesnar for the Universal Championship in a smashmouth match worthy of a huge stage. John Cena will tangle with Roman Reigns in a potential passing-of-the-torch moment that would be right at home at The Showcase of the Immortals. Those bouts will be among the biggest and best WWE delivers in 2017.