WWE’s SummerSlam pay-per-view is wrestling’s second biggest show of the year. 2013′s SummerSlam is looking to be a huge show with main event caliber matches on the card already confirmed. The August 18th show’s match card already features John Cena defending the WWE Championship against Daniel Bryan and CM Punk versus Brock Lesnar. There are also a number of other rumored matches, and because WWE already taped the next week’s Monday Night Raw and Friday Night Smackdown we have some spoilers ahead for fans. Yes, some of the results contain spoilers for the upcoming SummerSlam pay-per-view.