BOSTON — Rafael Devers left the Boston Red Sox’s 7-2 loss to the Mariners on Saturday after fouling a ball off the back of his knee during the seventh inning. “He’s OK,” Red Sox manager Alex Cora said. Devers should be available Sunday. Meanwhile, Cora is hopeful both Xander Bogaerts and Mookie Betts will be in Sunday’s lineup. Bogaerts didn’t play Saturday after he sprained his finger Friday. Betts didn’t play either because he was sick. “They’re going to show up early tomorrow, see where they’re at. We’ll go from there,” Cora said.