Brett had been fitted with a sling by the time reporters talked to him after the game.
"It's just subluxation," Brett said. "It's just frustrating that it happened my first start. Just going day by day and take it from there. ... It's happened a few times before. It's a little sore right now to be expected, but give it a couple of days and hopefully go from there."
Logan Forsythe, who started at first base, moved to second, and Allan Dykstra entered the game in Brett's spot to play first.
Brett was recalled from Triple-A Durham on Friday and made his Major League debut Saturday night.
"We'll evaluate him tonight and then tomorrow and kind of go from there," said Cash when asked about Brett's status.
The Rays currently have 10 players on the disabled list.
"We'd like to get to the point where the guys that you planned for are all out there," allowed Cash when asked if he felt some frustration about the injuries. "We understand that that doesn't always happen. There is some head scratching going on, you know, 'Is this really happening again?' You feel bad for Ryan Brett. He just got up here. He's had some good at-bats. And then a situation like that happens."
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.