Washington Nationals' Sunday Afternoon Lineup vs Milwaukee Brewers.

Washington Nationals' manager Davey Johnson talked to reporters after last night's game about the stomach virus that Bryce Harper had that kept the 19-year-old outfielder out of the lineup for the third game of three with the Brewers in Milwaukee. "[Harper] had a dizzy spell when he was hitting [in BP]," Johnson explained, "With the fact that he had trouble keeping some things down the last couple days, the doctor said he could be just at the end of a little virus, or just catching something. But he said [Harper] would be okay, if I needed to play him I could play him. But I wasn't going to play him."

The Nats' 69-year-old skipper said Harper would "more than likely" play today in the finale of the four-game set in Miller Park. "He was again driving people crazy on the bench," Johnson joked, "So I'd just as soon have him running around out there."

In 79 games and 346 plate appearances this season, the Nats' 2010 no.1 overall pick has hit 16 doubles, five triples and nine home runs while posting a .265/.338/.435 line so far in the majors. Through 23 games and 101 plate appearances in July, the first-year major leaguer has a .242/.317/.341 line with four doubles, a triple, a home run and five stolen bases.

The Nats' outfielder is back in the lineup this afternoon in right field with Roger Bernadina in center and Michael Morse in left as Nationals' left-hander Gio Gonzalez makes his twenty-first start of 2012.

• Here's the Nationals' lineup for the Sunday matinee:

Davey' Lineup-Sun @ MIL/G101 Lombardozzi 2b, Harper rf, Zimmerman 3b, LaRoche 1b, Morse lf, Espinosa ss, Bernadina cf, Flores c, Gio lhp.

— Nationals PR (@NationalsPR) July 29, 2012