Doug Fister 'felt strong' in rehab

Washington Nationals starter Doug Fister, who's been on the disabled list all season, made his first rehab start on Sunday with Class A Potomac and said he "felt strong" after an outing where he allowed six hits in four innings.

"I felt really good," Fister said, according to the Washington Post. "I felt like I was going back out there for another couple innings. That's a definite positive for me, mentally and physically. A step in the right direction and looking forward to the next one."

Fister struck out three and allowed three unearned runs. He threw 59 pitches, 42 for strikes.

He's expected to make his next, and final, rehab start on Friday with Double-A Harrisburg, the Post reports.

Fister joined the Nationals in the offseason. He dealt with elbow inflammation in early spring, and suffered a lat strain near the end of spring training. He says the muscle is no longer bothering him.

"No discomfort," he said, according to the Post. "No anything. Felt loose where I needed it to be."

Getting Fister back soon would be a boost to the Nationals, who are struggling through numerous injuries already this season.

Star outfielder Bryce Harper went on the DL Sunday with a sprained thumb, where he joined starting catcher Wilson Ramos (hand) and starting third baseman Ryan Zimmerman (thumb). Reserve outfielder Scott Hairston is also sidelined as he nurses a side injury.