Mets' Edwin Diaz exited Sunday's game at Phillies with back tightnessDiaz struggled in ninth inning, nearly blowing New York's four-run lead5/3/2021, 5:05 AMGarrett StepienFreelance Editorial ProducerMay 2, 2021; Philadelphia, Pennsylvania, USA; New York Mets relief pitcher Edwin Diaz (39) throws a pitch in the ninth inning against the Philadelphia Phillies at Citizens Bank Park. Mandatory Credit: Kyle Ross-USA TODAY Sports / © Kyle Ross-USA TODAY Sports