San Francisco Giants center Lee Jung-hoo is not expected to be out long-term after imaging on his back came back negative.

The Giants announced on Monday morning that Lee will undergo an MRI later in the day as the center fielder deals with mid-back tightness. Lee will have a follow-up with team orthopedist Ken Akizuki for another exam, as well. “It hasn’t gotten any better,” said manager Bob Melvin. “Send him in, get an MRI, see what’s there.”