Solarte then pulled up and was examined by team doctors before leaving the field, intermittently touching his side. He was replaced at shortstop by Alexi Amarista.
Solarte was pushed into duty at shortstop after Everth Cabrera was placed on the disabled list Tuesday with a hamstring strain. Amarista is the usual backup shortstop, but was supposed to be given a day off Wednesday.
San Diego manager Bud Black was encouraged that Solarte might not miss much time with the oblique injury.
"We think it's a mild strain on the left side," Black said. "We'll assess it day to day and try to keep him active [on the roster]. He thinks that he's going to be fine."
Solarte has a line of .282/.370/.423 with three home runs and 11 RBIs in 20 games with San Diego since being acquired in the Chase Headley deal on July 22.
Will Laws is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.