New York Mets left-hander Jose Quintana sustained a small stress fracture in the left side of his ribcage, the team announced Monday.Quintana went one inning in New York’s 7-1 spring training victory over the St. Louis Cardinals on Sunday before exiting the contest complaining about tightness on his side. He also announced that he would be withdrawing from the World Baseball Classic, where he was supposed to play for Colombia.The Mets are unsure how long they will be without Quintana, who was headed to New York for additional tests.