In what should come as somewhat of a surprise, the rematch between Brock Lesnar & Randy Orton will be taking place on September 24 at the WWE Live Event at the Allstate Arena in Chicago!
Here is the official announcement from The Allstate Arena about the scheduled match:
JUST ANNOUNCED: The SummerSlam Rematch – Brock Lesnar vs. Randy Orton has been added to the card for #WWELive right here in Chicago on 9/24!
