(AP) Clay Buchholz lost for the first time this season, and the AL East champion Boston Red Sox fell to Mark Buehrle and the Toronto Blue Jays 4-2 Saturday night.
A day after the Red Sox clinched the division title, they lost for just the sixth time in 21 games.
Buchholz (11-1) gave up two earned runs on six hits and two walks in six innings. He had pitched 11 scoreless innings in his previous two starts, his first since spending three months on the disabled list with a strained neck.
Buchholz was the first Boston pitcher to start a season 11-0 in his initial 14 starts since Roger Clemens went 13-0 in 1986.