Cairo, who came in batting .154, has played sparingly since being activated from the disabled list on May 7. Saturday marked only his eighth game and third start since returning from a hamstring injury.
"I've got to play Cairo sometime," Reds manager Dusty Baker said. "I need him and [Ryan] Ludwick and [Wilson] Valdez. I have to play them sometimes so they can be strong off the bench to help us. It's a tough job already, especially if you don't play.
"Let's not forget what a great job Cairo did for us the last two years."