CLEVELAND - Shelley Duncan's RBI double in the eighth inning gave the Cleveland Indians a soggy 3-2 win over the Chicago White Sox on Monday night and a sweep of their day-night doubleheader.
Duncan ripped a pitch from left-hander Matt Thornton (1-2) into the left-field corner, scoring Asdrubal Cabrera.
The first-place Indians won the opener 8-6.
The White Sox have lost six of seven.
Cleveland's Josh Tomlin allowed five hits in 7 innings - most of the final three in a steady downpour. He struck out a career-high eight, allowed two walks and maintained his control despite slick, slippery conditions on the mound.
Joe Smith (2-1) gave up a game-tying single after a lengthy rain delay, but got two outs and was credited with the win after Duncan's single.
Tony Sipp worked the ninth for his first save.
The Indians are 8-3 in their past 11.
Sipp gave up a two-out walk to pinch-hitter Paul Konerko before striking out Tyler Flowers for his second career save - first since July 23, 2010.
Cleveland's Travis Hafner homered and tripled in the opener. He struck out twice in the second game but was hit by a pitch for the 79th time in his career, tying him with Nap Lajoie for the team record.
Cabrera opened the eighth with a bloop single off Thornton, and Carlos Santana followed with a flair to almost the exact spot in shallow right-center. After Hafner popped out, Duncan pulled Thornton's pitch down the line to make it 3-2 and give the few hundred fans who stuck around after a lengthy rain delay something to cheer.
The White Sox tied it 2-all in the eighth, moments after a 1-hour, 25-minute rain delay, on Alex Rios' RBI single.
With the sky darkening and radar showing heavy rain approaching, the Indians scored twice in the fifth to take a 2-1 lead and put Tomlin in position for the win.
Tomlin retired the White Sox in order in the sixth and seventh before running into trouble in the eighth as the rain intensified. With one out, he walked Alejandro De Aza and gave up a single to Gordon Beckham before manager Manny Acta decided to pull his right-hander and bring in reliever Dan Wheeler.
But as Wheeler neared the mound, crew chief Larry Vanover ordered the groundscrew to cover the infield at 9:09 p.m. The rain delay lasted 85 minutes, and when play resumed, Acta put in side-armer Smith to face Rios, who promptly hit an RBI single to tie it 2-2.