Washington Nationals third baseman Ryan Zimmerman tested his right shoulder with light hitting Thursday but found little improvement in the soreness in his inflamed AC joint.

Zimmerman will visit with Dr. Neal ElAttrache in Los Angeles on Friday and likely receive a medicinal shot. After his consult, and once ElAttrache discusses things with Nationals medical director Wiemi Douoguih, the team will decide whether or not a disabled list stint will be necessary.

The Nationals are not concerned that the injury is worse than initially diagnosed and are sending Zimmerman to ElAttrache in order to allow the third baseman to remain with the team while getting treatment and not have to go back to Washington to see Douoguih.

"The diagnosis is fairly straightforward," said Nationals manager Davey Johnson when asked if the team was worried it might be something requiring surgery.