Worth noting

• If outfielder Bryce Harper is named to the All-Star Game roster on Saturday, Johnson said that he will not limit the 20-year-old's playing time.

"I think it's a great honor. I think you go," Johnson said of Harper, who is currently fourth in the outfield voting. "I think he's well-rested, [he can] get some more ABs."

• Lucas Giolito, the Nationals' top choice in the 2012 First-Year Player Draft, will make his first professional start on Wednesday in the Gulf Coast League, according to a source with knowledge of the situation.

Giolito, the Nationals' No. 3 prospect, had Tommy John surgery on his right elbow in August but has fully recovered. He is expected to throw one or two innings in his season debut.

• Wilson Ramos (left hamstring) went 0-for-3 and caught nine innings in his second rehab appearance at Class A Potomac on Tuesday. Johnson said that Ramos will play again on Wednesday and is still on track to return to the Nationals on Thursday.

• The Nationals on Tuesday outrighted reliever Cole Kimball to Triple-A Syracuse, clearing a spot on their 40-man roster.

• The Nationals on Tuesday agreed to terms with seven international free agents: right-handed pitcher Edwin Adames, catcher Jose Cabello, right-handed pitcher Angel Guillen, left-handed pitcher Jose Jimenez, outfielder Victor Robles, outfielder Dany Rojas and catcher Edwin Trejos.

Adames, Jimenez, Robles and Rojas are natives of the Dominican Republic, while Cabello and Guillen are from Venezuela and Trejos is from Panama. All seven of the prospects are 16 years old.

Rojas signed for $100,000, according to a press release by the Dominican Prospect League. Terms of the other six deals were not announced.