Mets' T.J. Rivera suffers rehab setbackRivera left his rehab game due to arm discomfort7/14/2018, 1:20 PMJul 16, 2017; New York City, NY, USA; New York Mets third baseman T.J. Rivera (54) makes a throw to first base in the first inning against the Colorado Rockies at Citi Field. Mandatory Credit: Noah K. Murray-USA TODAY Sports / Noah K. Murray