Jayson Werth to get MRI on hamstring

Jayson Werth is still battling to get back on the field for the Washington Nationals. According to James Wagner of the Washington Post, Werth will have an MRI on his right hamstring on Thursday. Werth's recovery is not being aided by a stomach bug and Nationals manager Davey Johnson said Werth will also see an internist to deal with potential dehydration and cramping problems, which are likely to be impeding the outfielder's recovery. Although Werth has not played in a week, Johnson insisted that he was not going on the disabled list and seemed to think that the bug was responsible for the slow recovery: “I have a good feeling if they can get rid of the bug he’ll be alright,” Johnson said. After missing the weekend with his ankle and hamstring problems, Werth had been aiming for a Tuesday return but after the Nats' Tuesday night game against the Tigers was postponed, he sat out again on Wednesday. Johnson reportedly held Werth out of the lineup because he was concerned the slippery conditions would aggravate the injuries. Tyler Moore has continued to receive playing time in right field, batting sixth in the Nationals' lineup throughout the weekend series with the Pittsburgh Pirates. Follow @mlbinjurynews Looking for fantasy baseball advice?