BOSTON — Xander Bogaerts relaxed to the beat of his favorite walk-up song. Three pitches later, he was stunned by excitement rounding the bases. Bogaerts hit a game-ending grand slam with one out in 10th inning, and J.D. Martinez hit his major league-leading 29th homer to carry the Boston Red Sox to a 6-2 victory over the Toronto Blue Jays on Saturday. Mookie Betts opened the winning rally by reaching on an error against Chris Rowley (0-1) when shortstop Gurriel, who moved there in the beginning of the inning, had his grounder go right through his legs.