Ventura hadn't seen Gillaspie since the injury when he addressed reporters following his team's 1-0 series-clinching win over the Mariners.
"I know he couldn't walk very well," Ventura said. It sounded bad and he seemed like he couldn't do anything, so we had to take him out."
Leury Garcia pinch-ran for Gillaspie at first.
Gillaspie, the team's leading hitter (.310 average), was placed on the disabled list on April 26 with a right hand contusion and later missed a May 24 game vs. the Yankees with a sore Achilles.
Joe Popely is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.