SEATTLE -- A nagging upper back injury finally forced the Angels to place right-handed reliever Fernando Rodney on the disabled list.
Rodney has not pitched since last Wednesday, so it can be backdated. He would be eligible to come off the 15-day DL on June 24.
"Fernando has been dealing with this, on and off, for the last couple weeks," Angels manager Mike Scioscia said. "He didn't pitch for about five or six days when we tried to settle it down and thought it felt good. Then he pitched in the Tampa series and thought it got a little aggravated.
"He was given some tests today and, getting direction from the medical department, the best course of action is to just backdate him on the DL and give him nine or 10 days to get this behind him."
Rodney had been one of the bullpen's most effective relievers as of late. Over his past eight appearances, he limited his opponents to an .067 average (1-for-15). Right-handers are hitting .135 against him. Overall, he is 2-3 with a 4.09 ERA. He has three saves in six opportunities.
To replace Rodney on the roster, the Angels called up right-hander Bobby Cassevah from Triple-A Salt Lake. He was 1-3 with a 4.64 ERA in 18 appearances with the Bees.
"From the reports we're getting from Triple-A, he was the one throwing the best," Scioscia said. "He was locked in, he's got good stuff going. Probably with his sinker, maybe he gives us a good dimension in our bullpen right now."
This is the second roster move in as many days for the Angels. On Sunday, the club recalled infielder Andrew Romine from Salt Lake to provide bench support for Alberto Callaspo, who tweaked a hamstring Saturday.
Right-handed reliever Kevin Jepsen was optioned to make room for Romine.
Because this is an injury to Rodney, the rules allow for Jepsen to be called back, if the club wanted. But Scioscia said he needs his time in Triple-A.
"He's trying to find himself right now," Scioscia said. "We hope Kevin finds himself and gets back quickly. I think he's going to work on stuff that you can't really experiment with in a Major League game. That's what he needs to do."