More bullpen problems ...
Walker had been the one consistently dependable reliever the Rays had, saving 10 games in 12 chances since being acquired from the Giants. He was 1-3 with a 4.95 ERA in 20 games.
Walker's injury was something of a surprise - he pitched Monday night, allowing two runs in the ninth for his second blown save, but made no mention of elbow problems. Manager Joe Maddon said before Tuesday's game that Walker was available to pitch.
To replace Walker, the Rays called up Tim Corcoran from Triple-A Durham.