Francisco Liriano injures right quad

CHICAGO -- Chicago White Sox starter Francisco Liriano was pulled for precautionary reasons at the start of the sixth inning of Sunday's 4-2 win over the Los Angeles Angels with a right quad contusion.

Liriano was having an impressive outing before he was struck by a Maicer Izturis grounder in the fifth inning. Liriano showed signs of discomfort when attempting to field Peter Bourjos' bunt on the next play. While Liriano was hit on the muscle and not the bone, White Sox manager Robin Ventura said it wasn't worth the risk leaving him in.

"I was really sore and cramping a little bit," Liriano said. "I think I'll be OK for my next start."

Liriano showed excellent command through five innings of work, striking out four, walking one and allowing a run on four hits, continuing to look every bit the solid addition general manager Ken Williams projected he would be when the left-hander was acquired from the Minnesota Twins late last month. With just a few adjustments -- one of which is to stand tall on the mound -- Williams believes Liriano can be an impact pitcher for the Sox should they make the postseason. He owns a 2.46 ERA with 12 strikeouts in two starts as a member of the Sox.

"Everything was working pretty good today," Liriano said. "I was locating my slider pretty good today and my fastball, too, so everything was working."

Nate Jones came in for the White Sox in relief of Liriano.

The White Sox pitchers have struggled to stay healthy this season.

The team decided last week to shut down John Danks, who will undergo exploratory shoulder surgery Monday.

Chris Sale, who has been resting a tired arm, will return to action Monday against Kansas City. Gavin Floyd also spent time on the DL this season with right elbow tendinitis.