"Nothing is wrong. He hasn't had a day off," manager Dusty Baker said. "I could see him and Joey [Votto] are spent. It always happens after All-Star Games. If it was around the corner, it would be no problem. But they went coast-to-coast and back and didn't have any off-days. When you're tired, the first thing you lose is your concentration."
With Stephen Strasburg pitching for Washington on Wednesday, Baker said that Tuesday made more sense for the day off.
Phillips is batting just .194 in July after hitting .373 in June. Paul Janish took his place at second base, batting second.
"I just told [Phillips] to stay home, eat, sleep and show up late," Baker said. "I have to give Joey [a day] off, too, because I can see he's in the same boat, kind of."