Lowe was removed from Wednesday's game against the Rangers due to left side tightness, Marc Topkin of the Tampa Bay Times reports.
It's not clear when Lowe was injured, but he went 0-for-2 with a strikeout before being lifted after the fifth inning. The Rays are calling Lowe day-to-day for the time being, but the club may offer more clarity on his situation after the game.