The Kansas City Royals placed second baseman Michael Massey on the 10-day injured list Sunday because of a low back ligament sprain.
In a corresponding move, the Royals recalled shortstop Nick Loftin from Triple-A Omaha.
Massey homered in the fifth inning of the Royals' 8-1 victory over the host Tampa Bay Rays on Friday. He exited the game in the next inning and did not play Saturday.
He also missed the start of the season with a lower back strain.
"It's more of the same, what he has been dealing with since the spring, just some tightness," Royals manager Matt Quatraro said. "We're going to have to take his lead on it and manage it. He's feeling better, moving around and exercising, but we're going to have to manage it day to day."
Massey, 26, is hitting .294 with six home runs and 23 RBIs in 29 games. He has a .306 on-base percentage, .529 slugging percentage and .835 OPS.
Loftin hit .276 (8-for-29) in 13 games with Kansas City this season. He is batting .308 (28-for-91) in 32 career games.