WWE has announced that United States Champion Sheamus will defend his title against Rusev on the WWE Network tonight after RAW in Buffalo goes off the air.
WWE tweeted:

"TONIGHT after #RAW, US Champion [MENTION=9423]wwe[/MENTION]Sheamus defends vs. @RusevBUL, exclusively on [MENTION=9423]wwe[/MENTION]Network! #FreeFreeFree"