CHICAGO – Alfonso Soriano showed off his power and his arm Sunday, and the Chicago Cubs completed a three-game sweep of the fading White Sox with a 3-0 victory.

Soriano cut down a runner at the plate in the fifth with a strong throw and then hit his third homer of the interleague series in the seventh – also his 15th of the season and 11th this month.

White Sox manager Ozzie Guillen was ejected in the eighth inning after a bizarre play on the bases. The White Sox appeared to turn a double play after a Cubs baserunning blunder, but the umpires conferred and apparently called interference on White Sox shortstop Juan Uribe. They put all the runners back out there, loading the bases, and after a long argument with a relatively calm Guillen, Koyie Hill hit a sacrifice fly to make it 3-0.

Cubs lefty Sean Marshall (4-2) allowed five hits in 6 1-3 scoreless innings against the punchless White Sox, who managed two runs in the three-game set and have lost 22 of their last 27.

Bob Howry got three outs for his second save.

The Cubs won five of six meetings this season with the White Sox, the most by either team since their interleague series expanded to six games in 1999. It also was the Cubs’ first three-game sweep at U.S. Cellular Field.

Luis Terrero twice tested Soriano’s arm in the fifth inning and the second time – at the plate – he lost. Terrero went from first to third on a single by Uribe, beating Soriano’s throw.

But when Scott Podsednik hit a fly to medium left, Terrero took off for the plate and Soriano made a strong throw to Hill, who applied the tag to complete the double play and keep the White Sox scoreless.

The Cubs then scored in the next inning off Jose Contreras (5-8) as Aramis Ramirez doubled, Cliff Floyd sent him to third with a single and Angel Pagan, who scored the winning run on a ninth-inning squeeze bunt in a 2-1 victory Saturday, hit an RBI grounder.

Contreras allowed 10 hits and two runs in seven innings.

In the bottom of the sixth, Paul Konerko hit a long drive to center that Pagan initially misjudged before turning around and then making a diving catch just before it hit the ground. Konerko headed into second with his arms spread out before realizing it was an out and then kicking the dirt in frustration. That’s the kind of season it’s been for the White Sox.

The Cubs had first and second and none out in the eighth after a walk by Felix Pie and a single by Pagan. When Mark DeRosa hit a ball over Rob Mackowiak’s head in right, Pie stopped at third and that left Pagan caught between second and third as DeRosa headed to second.

The White Sox appeared to turn a double play as they threw to second, where Uribe tagged out Pagan and then threw home. Pie was tagged out at the plate in a rundown. But after the umpires conferred for about five minutes, they ruled all three runners safe for apparent interference on Uribe against Pagan.

The White Sox also threatened in the third when Uribe and Podsednik singled. With two outs and runners at first and third, Jim Thome hit a hard grounder to first. Derrek Lee knocked the ball down and then scrambled behind the bag to recover it, flipping to Marshall covering just in time to beat a hard-sliding Thome.

Notes: Soriano hit leadoff homers Friday and Saturday. … The White Sox hired Doug Laumann as director of amateur scouting. He replaces Duane Shaffer, who was fired Friday in his 35th season with the club. … The Cubs and White Sox have split 60 interleague games.

AP-ES-06-24-07 1740EDT