TORONTO — Upon contact, Freddy Peralta removed his glove and put his head down. By the time the ball landed just over the left-field wall, he’d taken off his cap as well and walked all the way to the foul line near home plate.So long a refuge, the mound has become a lonely place for Peralta of late.Fresh off a June with an ERA over six, Peralta started July with more of the same. In the New York Mets’ 9-2 loss to the Toronto Blue Jays on Wednesday afternoon, the right-hander allowed five runs over four laborious innings.“I don’t feel good (about it),” said Peralta, who said this was “probably” the most difficult stretch of his career. “I’m just trying to come back and make adjustments.”As in Philadelphia during his brutal start two turns ago, the third inning was the biggest problem. With two outs, Peralta gave up an RBI double to Ernie Clement and that backbreaking three-run homer to rookie Sean Keys — the first big-league big fly for Keys.The defense was unhelpful in that inning. Francisco Lindor didn’t snag a line drive within his reach early on, and Carson Benge took a circuitous route to Clement’s double. Both would have been good defensive plays; both defenders are capable of making them. Make either, and Peralta posts a zero in the frame.