The New York Mets announced Friday that infielder T.J. Rivera has been placed on the 10-day disabled list with a partially torn UCL in his right elbow. His placement on the DL is retroactive to Thursday, July 27.
We have activated Neil Walker & placed T.J. Rivera on the 10-Day DL w/ a partial tear of the ulnar collateral ligament in his right elbow.
— New York Mets (@Mets) July 28, 2017
According to Kristie Ackert of the New York Daily News, Rivera had been having elbow pain for about a week.