BOSTON -- The Red Sox eyed a three-game sweep of the White Sox to inch closer in the postseason race, but they couldn't finish the job on Sunday afternoon.

Instead, the 33-111 White Sox snapped a tie with a five-run rally against Zack Kelly in the top of the ninth and defeated Boston, 7-2, to salvage the finale at Fenway Park.

Aside from solo homers from Connor Wong and Wilyer Abreu, Boston couldn't get the bats going.

Richard Fitts, Boston’s No. 13 prospect per MLB Pipeline, turned in a strong performance in his Major League debut, firing 5 2/3 innings while scattering six hits and two unearned runs.

Those runs were the result of a costly fielding error by Triston Casas to open the sixth, at which time the Red Sox were clinging to a 1-0 lead.

Down 2-1, Boston answered swiftly when Abreu mashed an equalizing solo homer into the bleachers in right-center with two outs in the bottom of the sixth.

But the White Sox seized the momentum in the top of the ninth with their surge against Kelly.