Sam Fuld, who made a spectacular catch Saturday in left field, slamming into the gate face-first, started in left in Soriano's spot. Soriano also has been struggling at the plate, batting .116 (5-for-43) in his past 12 games but said Sunday the knee hasn't been a factor.
"Running is a problem," Soriano said Sunday.
Reed Johnson, on the disabled list since July 30 with a fractured left foot, apparently won't be back until early September. X-rays taken late last week showed that the bone had not fused as well as hoped.
"It's going to be a little longer," manager Lou Piniella said Sunday. "We thought he'd be ready this [coming] week, but think it'll be the first of September."
The Cubs will get one player back from the disabled list on Tuesday, when Carlos Zambrano (7-4, 3.35 ERA) is activated. Zambrano, out with back spasms, will open the homestand against the Washington Nationals.
"Hopefully, he'll give us a lift," Piniella said.
Carrie Muskat is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.