(Evan Vucci/AP)

Storen will either start Thursday’s game in Potomac or come in as a reliever to finish it, Johnson said. He will appear in four total games, pitching every other day, and remain on track to rejoin the Nationals following the all-star break next week.

Tracy will join Storen in Potomac and there’s good chance — 90 percent, Johnson said — that Nady will begin his rehab assignment with them as well. Tracy is also expected to rejoin the Nationals at the same time as Storen.

Storen saved 43 games for the Nationals last season but has yet to make his major league debut this season because of surgery to remove a bone fragment in his right elbow in April. When he returns, he will likely see time as a setup man in the eighth inning as Tyler Clippard has emerged as a shutdown closer in the meantime.

Tracy, whom Johnson has said was the team’s worst loss to injury because of his valuable bat off the bench, went 6 for 18 and with nine RBI off the bench. Tracy underwent surgery in late May to repair a torn muscle in his groin. Nady, who played in 40 games in the outfield and was hitting .157 with three home runs, was placed on the 15-day disabled list on June 25 with tendonitis in his right wrist.

The coming return of the injured players is a welcome development for the Nationals, who have managed to stay in first place in the National League East despite placing 15 players on the disabled list since the start of the season.

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