Chicago ? Bruce Chen continues to make life difficult for a former teammate.

Chen continued his mastery of the White Sox, and Billy Butler and Melky Cabrera homered to lead the Kansas City Royals to a 5-1 victory over Chicago on Friday night.

Chen (7-5) held Chicago to one hit over six innings and is 2-0 with a 0.90 ERA in three starts against the White Sox this season.

Chen, a teammate of White Sox manager Ozzie Guillen during his first two big-league seasons in Atlanta, was the subject of some colorful comments after the lefty shut down Chicago earlier this season. Guillen wasn’t as animated on Friday, but still wasn’t pleased.

“Same old movie,” Guillen said. “We made him work a little bit today, better than the last time we faced him. But to still go out of the game with one hit. I’m not going to take away any credit. This kid went out and pitched well against us.”

Butler homered in the sixth. Cabrera broke the game open with a three-run homer in the ninth.