The final date and kick-off time will be confirmed next month once the Barclays Premiership fixtures are announced for Swansea City FC on June 19. Ticketing details for this game will also be announced in conjunction with Ospreys later in the summer.
It will be Worcester's first return to the Liberty Stadium since the autumn on 2008 when the Ospreys secured victory when the two teams met in the LV=Cup.
Warriors have already confirmed two home pre-season fixtures as they entertain Rotherham Titans (Wednesday, August 14) and Cardiff Blues (Saturday, August 17) at Sixways Stadium.
Season Ticket holders gain FREE entry to our pre-season fixture with Cardiff Blues.
To become a Season Ticket holder for the 2013/14 season at Warriors call the Box Office on 01905 454183 or click HERE for further details.
Full ticketing details for all home pre-season fixtures will be published on www.warriors.co.uk throughout the summer.