Mets INF T.J. Rivera left his rehab game with the 51s due to discomfort in his arm. He played five innings before being removed.
Rivera had Tommy John surgery on his right elbow last September after initially trying to rehab the injury. He was previously aiming to return by May, but that was pushed back and he made his rehab debut on July 5.
"His arm was not feeling the way it should have so we're going to reevaluate him tomorrow, see what the plan is," 51s manager Tony DeFrancesco said, via Betsy Helfand.