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8/18/2013 2:33 P.M. ET

Werth playing through lower back tightness

ATLANTA -- Nationals outfielder Jayson Werth experienced a tight lower back in Saturday's game against the Braves. After he walked in the eighth inning, Braves right-hander Jordan Walden tried to pick Werth off at first base. That's when Werth's discomfort got worse, according to acting manager Randy Knorr. After the inning ended, Werth was out of the game and replaced by Roger Bernadina.

Werth said he has been dealing with the back problems for a couple of days, but it didn't stop him from being in the lineup Sunday. He was hitting cleanup for Washington.

Werth is the Nationals' hottest hitter. He took a nine-game hitting streak into Sunday and was 18-for-35 [.514] during that span.

Jordan hopes he's done enough to impress Nats

ATLANTA -- After he was placed on the disabled list because of a lower back strain, Nationals right-hander Taylor Jordan said he received word from assistant general manager Bryan Minniti that his season would come to an end.

Jordan was on an innings limit after having Tommy John surgery in 2011. He pitched a combined 142 innings in the Major and Minor Leagues, won 10 games and had a 1.96 ERA.

"This season went by really quick. It wasn't really a grind for me. I've had worse," Jordan said. "Hopefully, what I did impressed them enough for me to have a chance to [be in the big leagues] next year."

Last week, Jordan's back acted up while he sat in a dentist's chair. The injury is not considered serious. He last pitched on Friday in a 3-2 loss against the Braves, allowing two unearned runs in six innings. After the game, Jordan was getting treatment for the back and it was decided that his season was going to come to an end. If the injury didn't occur, Jordan would have had at least two more starts.

"I noticed [the injury] after I got out [of the dentist's chair]," Jordan said. "I was signing papers after that because I was sitting down for a little while. That's when I first felt it. It wasn't like the dentist did anything."

Jordan said he would like to add a cutter to his arsenal of pitches, which includes the fastball, slider and changeup. He believes a cutter will be useful against left-handed hitters. He will start developing the pitch this offseason.

"I kind of want to get a new pitch," Jordan said. "I just want to keep the ball down and try to make every pitch count. My slider has been getting better. I want to keep everything how it is."

Reliever Roark collects first MLB hit, RBI

ATLANTA -- Besides pitching four shutout innings against the Braves on Saturday night, Tanner Roark collected his first big league hit in the fifth against right-hander Anthony Varvaro. With two outs, Roark slugged an RBI double to left-center field, scoring Tyler Moore.

"I knew I hit it well. Some of the guys were asking me, 'Did you think it was going to go out?' I thought it had a chance." Roark said. "I got a pitch up and I put a good swing on it."

Roark received the ball after the game and he plans to give it to his parents when he sees them in Chicago this week. Roark is expected to see a lot of family members when the Nationals play the Cubs at Wrigley Field starting Monday night.

"The whole series, there is going to be people from Wilmington, [Ill.], my hometown. It's going to be awesome to see everybody," he said.

Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashinNats. This story was not subject to the approval of Major League Baseball or its clubs.