He came back in the fifth with his 27th homer, a two-run shot for a 5-1 lead.
The two-run shot was his 13th of the season.
He had hit a two-run shot in the seventh.
In the top of the 7th, he hit his second, a two-run shot to dead center.
The home run, a two-run shot, came in game 4, which the Yankees won, 6-2.
His two-run shot gave Boston a 5-2 lead in the sixth.
He hit his third home run, a two-run shot, in the eighth.
His two-run shot gave the Yankees a 2-0 lead in the first inning.
Carter hit a two-run shot in the seventh inning, his 17th this season.
The first, a two-run shot in the third inning, put the Giants ahead to stay.