"I'm good. I'm playing today," Phillips said.
The club did not think the injury was serious at the time, but it lifted Phillips as a precaution.
"It was what we thought it was," Reds manager Dusty Baker said. "It's easy to get cramps up there, especially if you're not drinking enough water, or if you're drinking alcohol, which Brandon doesn't drink at all. So you know it had to be him not drinking water."