American Deontay Wilder will put his unbeaten record on the line against former world title holder Siarhei Liakhovich next month.
Wilder, who extended his record to 28-0 - with all inside four rounds - against Audley Harrison in Sheffield in April.
In Liakhovic, 37, he takes on an opponent who briefly held the WBO strap in 2006, but has largely been inactive since and last won a fight in 2010.
The Scottsdale-based Belarusian was last seen more than a year ago against another unbeaten American in Bryant Jennings, losing in the ninth round.
The 10-round contest in California takes place on August 9, Wilder's sixth fight in 12 months as he builds towards a potential world title shot.