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08/27/09 12:23 AM ET

Soriano back in lineup, may seek MRI

Cubs slugger also might consider cortisone shot in left knee

CHICAGO -- Alfonso Soriano, who had not played since Friday, was in the Cubs lineup in Wednesday's 9-4 victory over the Nationals. He went 1-for-4.

Soriano said he'll continue to get treatment on his left knee and if the discomfort does not go away, Soriano wants to get an MRI, possibly on the next off-day, Sept. 10. The knee bothers him when he runs, not when he hits.

Soriano may consider a cortisone shot if that helps alleviate the pain.

"It goes to show you he wants to play," manager Lou Piniella said. "That's the first thing it shows you. Over the 17, 18 years I played in the big leagues, I had my share and more of cortisone shots in my shoulder to play.

"You have professional people administering these shots. If they can alleviate some discomfort and get you through the season without it being risky, I don't see any problem with it."

Carrie Muskat is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.