The White Sox endured two rain delays Tuesday night totaling 2 hours 22 minutes.
They started play with the knowledge Cleveland already had beaten Oakland.
But the Sox took care of their own business.
Jose Contreras (12-7) continued his second-half success, improving to 6-1 in his last eight starts. And the Sox supported him with timely hitting in a 6-4 victory over Kansas City that snapped a four-game losing streak.
The victory, before an announced crowd of 9,535, allowed the Sox (88-55) to maintain their six-game lead over Cleveland in the American League Central with 19 games remaining.
The Sox showed no effects of their recent losing streak, the absence of embattled reliever Damaso Marte or a shower that postponed the start of the game by 1 hour 50 minutes.
Contreras, who entered the game with a four-game winning streak, limited the Royals to two hits through the first five innings.
He got relief help from Cliff Politte and Bobby Jenks, who pitched a scoreless eighth and ninth for his fifth save.
The Royals' first run stemmed, in part, from Contreras' effectiveness. Angel Berroa swung and missed on a big breaking pitch for a third strike, but the ball skipped off A.J. Pierzynski's glove for a wild pitch.
John Buck followed with a sharp single up the middle. Andres Blanco laid down a sacrifice bunt. Third baseman Joe Crede, playing his fourth game since returning from a hairline fracture of his right middle finger, sailed a throw over first base for an error that allowed Berroa to score and give the Royals a 1-0 lead.
The damage could have been greater had Buck not been thrown out trying to score from first.
Crede made up for his error by ranging far to his left to retire Blanco to end the fifth.
But Contreras ran into trouble in the sixth, causing his earliest departure since he lasted five innings against Toronto on Aug. 4.
Chip Ambres led off with a hit, and Terrance Long followed with a broken-bat single into right. Mike Sweeney hit an opposite-field double to score Ambres. After cleanup hitter Matt Stairs walked, Contreras threw his second wild pitch of the game to score Long and move the tying run into scoring position.
Contreras proceeded to strike out Emil Brown and Mark Teahen. Manager Ozzie Guillen elected to pull Contreras, who had thrown 90 pitches, in favor of Cliff Politte.
Politte got Angel Berroa to hit a soft grounder that bounced over the mound but was hit slow enough for an infield single that scored Sweeney and closed the lead to 5-4. Buck hit a grounder back to the mound for the final out.
It was a strangely successful night for the Sox offense, which didn't score in Sunday's 6-1 loss to the Los Angeles Angels until Juan Uribe hit a home run with two out in the ninth.
Scott Podsednik led off the game with his first triple in 432 at-bats this season. Unfortunately for the Sox, Podsednik was left stranded.
But in the fourth, the Sox strung together four consecutive two-out hits to take the lead, capped when Uribe hit a fly that fell between Long and Ambres in left center for a double and a 3-1 lead.
In the fifth, Carl Everett hit a two-out infield single to snap an 0-for-13 slump, and he scored on Aaron Rowand's double.
Everett moved down one spot in the batting order, as manager Ozzie Guillen tried to take advantage of Paul Konerko's hot hitting by moving him from fourth to third.
Rowand succeeded in the fifth spot by hitting three doubles in a game for the first time in his career.
Uribe hit a double and scored on an error for a 5-1 Sox lead in the sixth.
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