Nationals pitcher Doug Fister left his minor league start on Thursday with a right lat strain. He will now head back to D.C. for a second opinion.
The Nationals made the announcement on Twitter in the afternoon. Fister had pitched in the morning in Viera, Fla. with a goal of 60-65 pitches as he works his way towardthe regular season. Fister was on track to pitch at Nationals Park on April 6 against the Braves.
It now looks likely Fister will begin the season on the disabled list.
Fister threw 47 pitches five days earlier against the Marlins and felt good enough to continue his rehab program. The lat strain is a new injury after Fister was originally coming back from elbow inflammation.
Fister's injury likely opens the door for Tanner Roark and Taylor Jordan to make the Opening Day roster. The right-handers were battling for the fifth spot in the Nationals' rotation as Fister was locked in at No. 4.