ST. PETERSBURG—The Rays are calling the injury sustained by reliever Jason Isringhausen an elbow strain, but it’s obvious they think it’s worse.

They placed him on the 60-day disabled list Sunday, making room for reliever Winston Abreu on the 40-man roster. Abreu, who was selected from Triple-A Durham, is supposed to join the team by game time today.

Isringhausen, who stepped off the mound in obvious pain after throwing a wild pitch in the ninth inning Saturday night, will undergo an MRI tomorrow.

Abreu, 32, is a longtime minor leaguer who didn’t fare too well in brief stints with Baltimore and Washington.  But he has dazzling numbers at Durham: 3-0 with a 1.41 ERA in 23 games. Opponents hit .128 off him, the seventh best mark in all of the minors.

Also today, manager Joe Maddon confirmed the team plans to bring shortstop Jason Bartlett back for Tuesday’s game at Colorado. Bartlett will play one more game for Class A Charlotte today.