WWE Spoilers: Huge main event announced for SummerSlam!Posted on July 21, 2015 by Cassidy Wrestling NewsShare On: Tweet The 28th annual WWE SummerSlam will come to you, live on the WWE Network and select pay-per-view providers, on August 23 from Barclays Center in Brooklyn, NY. As announced on RAW, a huge rematch from last year’s WrestleMania will main event “The Biggest Event of the Summer”. Here is the current card: Brock Lesnar vs. The Undertaker What do you think of this big rematch? Post your comments in the box below.