CHICAGO -- Luis Valbuena broke a 2-2 tie with a two-run eighth inning double to lead the Chicago Cubs to a 8-2 victory and a season sweep of the Chicago White Sox on Monday night.
Valbuena, a late substitute at designated hitter, broke a 2-2 tie with his two-base hit off White Sox reliever Matt Thornton that scored Alfonso Soriano and Dioner Navarro for a 4-2 lead.
The Cubs wrapped up a four-game sweep with Monday's decision, a makeup of a May 28 rainout that started 29 minutes late after a pregame downpour at U.S. Cellular Field.
The season sweep was the first by either team since the series moved to a home-and-home format in 1999.
Dave Sappelt's two-out eighth inning single off right-hander Nate Jones brought Valbuena home for a 5-2 lead. Cody Ransom drove in two more runs when his single off Jones scored Sappelt and Julio Borbon.
The Cubs added another run in the ninth when Sappelt singled home Soriano.
Cubs right-hander Matt Garza (5-1) picked up his fourth straight victory.
Thorton (0-3) took the loss after working one-third of an inning. He gave up three earned runs on two hits and walked one.
Sappelt collected a career-high four hits, Valbuena was 1-for-3 with three RBIs while Soriano reached base four times, going 3-for-4 with a home run in the sixth that gave the Cubs a temporary 2-1 lead.
The White Sox replied in the bottom of the inning to tie the game when Gordon Beckham stole home as part of a double steal with Alex Rios and two out.
Garza lost a 2-1 lead when he failed to work out of a sixth-inning jam. Beckham reached on an infield single with one out, advance to second on a Darwin Barney throwing error and reached third on Rios' single to third.
Garza worked seven innings, allowing one earned run on five hits. He struck out six and walked none.
White Sox starter Hector Santiago was pulled with one out in the sixth after giving up two earned runs on five hits. He struck out three and walked two while throwing 101 pitches.
The White Sox resume a nine-game road trip with a three games in Detroit starting Tuesday. The Cubs are back at Wrigley Field Tuesday night for the first in a two-game inter-league series with the Angels.
NOTES: The Cubs recalled LHP Brooks Raley from Triple-A Iowa on Monday for his second stint this season in Chicago. He had no appearances during a June 12-13 recall. Raley made his big league debut in August 2012 and went 1-2 in five starts. ... With players like Garza potentially on the trading block, Cubs manager Dale Sveum said he tells his players not to dwell on talk of trades and roster changes. "Take care of yourself, that's all you have to worry about," he said. ... Cubs RHP Edwin Jackson is the only player on either roster to play for both teams. Jackson spent part of 2010-11 with the White Sox. ... Cubs outfielder Brian Bogusevic, a suburban Oak Lawn, Ill., native, went to high school at De La Salle Institute, one-half mile east of U.S. Cellular Field. ... Josh Phegley made his home debut with a start in his third game since being called up from Triple-A Charlotte. A Terre Haute, Ind., native, Phegley said he'll expect big support from family back home. "They'll be coming up every other game in waves," he said. ... Beckham came into the game hitting .345 with nine RBIs and 12 runs since returning from the disabled list on June 3. He is 20-for-28 (.417) in his last seven games.