(AP Photo/Chris Schneider)

Jayson Werth could return to the Nationals’ lineup this weekend, most likely on Sunday, according to Manager Matt Williams. Werth is ramping up activity in his recovery from his inflamed right shoulder and is expected to take part in full workouts on Saturday.

Werth ran in New York on Thursday, along with taking part in some light throwing and outfield drills, Williams said. He is slated to hit off a tee on Friday and potentially be available off the bench against the Pirates. He is “certainly” available off the bench on Saturday, Williams said.

“It will be a full day [of workouts Saturday] I think just to make sure everything is good,” Williams said. “If you’re looking at all of that, it probably points to Sunday, but it could be [Saturday], too. It’s depending on how he feels, so we’ll see.”

Including Friday night, Werth has not been in the Nationals lineup in six of the past seven games with an acromioclavicular (AC) joint sprain. Werth received a cortisone shot earlier this week and reported feeling better.

Meanwhile, backup outfielder Nate McLouth’s recovery from his right shoulder inflammation has hit a snag. McLouth is eligible to return from the disabled list Sunday but the recovery is “not quite going as well as he’d like it to go,” Williams said.

McLouth is receiving a second opinion on his balky shoulder, which he admitted last week has been bugging him for a while and worsened.

“We would hope that it would just be taken care of and he’d be okay,” Williams said. “The fact that he’s going to get a second look at it is concerning to us, but we want to do that to make sure that we’re taking the proper path to making him better. I think it’s certainly standard to have a second look and have somebody else give an opinion on it. We’ll see what that is and we’ll adjust accordingly and see what we can do to make him better.”

With Werth out, Michael A. Taylor has been playing right field, as he is Friday night. Taylor was called up earlier this week to replace injured Steven Souza Jr. On Friday, Souza did some light throwing for the first time since have a right AC joint inflammation diagnosed. “It feels a lot better,” Souza said.

Souza wouldn’t be eligible to come off the disabled list until Aug. 25.