(At least, we think it was his groin. That's what a Nationals spokesman said, though manager Davey Johnson called it a hip flexor and Werth said both groin and hip flexor in an otherwise coy response to the question. In the NHL, this would be called a "lower body" injury.)
At any rate, Werth said his removal from the game was precautionary.
"It could just be a muscle spasm, I don't know," Werth said. "We'll see how it feels tomorrow. It's real mild. I don't think it'll be a big deal. Whether Davey wants to play me tomorrow or not, I don't know. But it's part of it. You deal with these things. You get dinged up. You get strains and sprains over the course of the season. I don't think it's anything that should keep me out too long."