WWE has announced that Bobby Lashley will hold a United States Championship Open Challenge tomorrow night on Monday Night Raw.
Lashley is currently scheduled to defend his title against Theory at SummerSlam so, in theory, he could lose the belt before the pay-per-view.
In addition to the U.S. Open Title Challenge, WWE announced on Friday that Brock Lesnar will be returning to Raw this Monday. Lesnar is scheduled to challenge undisputed WWE Universal Champion Roman Reigns at SummerSlam in a Last Man Standing Match. WWE is billing this as the last ever Reigns vs. Lesnar match.
The other match announced so far for Raw is Matt Riddle vs. Theory.