The Rays recalled Roycroft from Triple-A Durham on Monday.
Tampa Bay optioned right-hander Mason Englert to Triple-A to open up a spot on the active roster for Roycroft, who will join the big club for the first time since being acquired via trade with St. Louis on June 23. Roycroft owns a 5.02 ERA, 1.43 WHIP and 23:8 K:BB in 28.2 innings at the Triple-A level this season and will likely be limited to a low-leverage relief role while he's up with the Rays.