Washington Nationals manager Dusty Baker is concerned that second baseman Daniel Murphy's injured leg is not responding to treatment.
Murphy has not started the past four games, only appearing in the past two as a pinch-hitter.
Murphy was injured last Saturday after sliding into second base after a double. He got up slowly after the slide, but the team has not said what type of injury Murphy has.
"I'm sure the world would like to know [what's wrong with Murphy]," Baker said, according to MLB.com. "Our trainers are still working on him. They are trying to get to the bottom of it. When you are hurt this late in the season, you don't have a bunch of time to come back. We have some hands working on him."
The Nationals have a nine-game lead over the New York Mets in the National League East. Their magic number to clinch the division is two.
Murphy is batting .347 with 25 home runs and 104 RBIs in 141 games this season. He leads the NL in doubles, slugging and OPS, and is second in RBI and batting average.
"Daniel has been carrying us most of the season, so now it's time for some of the other guys to step up during Daniel's absence and not depend on Daniel being here," Baker said.
- Scooby Axson