Wells, signed this past offseason to help fill the rotation spots vacated by Pedro Martinez and Derek Lowe, got off to a shaky start with Boston. He went 2-3 with a 4.91 ERA in April and 1-1 with a 7.88 ERA in May before turning his season by going 4-0 over his last six starts.
Wells was reached for five runs and 10 hits over five innings Sunday, and did not receive a decision in the Red Sox’s 12-8 win at Philadelphia. He had won each of his previous three outings, allowing four runs over 20 innings during the streak.
Wells will have to deal with a Toronto lineup that has tormented Boston pitchers this year. The Blue Jays have won seven of nine meetings with the Red Sox, including a 15-2 rout in Friday’s series opener.
Reed Johnson hit a pinch-hit grand slam and drove in six runs as Toronto put up a season-high run total, three more than it had against Tampa Bay on Wednesday, to pull within five games of the first-place Red Sox.
Johnny Damon homered to extend his hitting streak to 17 games, one shy of his season and career high, for Boston, which has lost three of four since a seven-game winning streak.
The Red Sox’s struggling bullpen was pounded for seven runs in 3 1-3 innings after starter Matt Clement gave up eight runs in just his second loss in 11 decisions this year.