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Bryce Harper performed some range of motion exercises and didn’t have a lot of swelling in his left knee, according to Manager Davey Johnson, but did have “a little puffiness.” Johnson insisted that the Nationals training staff wasn’t overly concerned.

Harper is still in the rest period before he can attempt baseball activities early next week while the Nationals are in Philadelphia. If all goes well, Harper is expected to play in rehab games later next week before his return to the Nationals. Harper hasn’t played since May 26 when he aggravated his left knee bursitis; the original injury occurred on May 13 when he smashed into the right field wall in Los Angeles.

Harper received a PRP (platelet rich plasma) and cortisone injection in his knee on Monday during his visit with orthepedic surgeon James Andrews and was instructed to rest his knee for a week, including using a brace.

>>> Wilson Ramos’ recent setback in his rehab from a hamstring strain was minor, Johnson said, reiterating what General Manager Mike Rizzo noted the day before. Ramos underwent tests and what he felt in his hamstring while running during drills in Viera, Fla., earlier this week was likely breaking up of scar tissue, Johnson said.

Ramos is already catching bullpen sessions again. He is expected to play in rehab games by the end of the month.

Ramos originally strained his hamstring April 13 and missed 14 games. He came back but re-injured the hamstring May 15 and has missed 27 games while on the disabled list. He was about four weeks into a six-week rehab when he felt the discomfort this week.