Fister (10-2) allowed just three hits with one walk and five strikeouts in seven shutout innings to reach 10 wins in 14 starts, one fewer than any previous Washington pitcher. Gio Gonzalez reached 10 wins in 15 starts in 2012, and Jordan Zimmerman duplicated him last season. The Nationals moved to Washington from Montreal in 2005.
Adam LaRoche drove in two runs and Anthony Rendon added an RBI single in the ninth to help send the Reds to their eighth loss in nine games since the All-Star break. They are hitting .178 (50-for-281) in that span.
The teams went the entire three-game series without hitting a home run, the first time in the 12-year history of Great American Ball Park that three consecutive games have been played without a home run. The Reds and Nationals combined to hit just two home runs in their six games this season -- one by each team.
Reds' starter Mat Latos allowed no hits through the first four innings before Danny Espinosa led off the fifth with a clean single. Fister sacrificed Espinosa to second with one out and Latos walked Denard Span and hit Anthony Rendon to load the bases. Jayson Werth walked to drive in a run after falling behind 0-2 and LaRoche followed with a two-run single for a 3-0 lead.
Latos and plate umpire Toby Basner exchanged words as the Reds left the field after the inning.
Latos (2-3), in his eighth start after opening the season on the disabled list with elbow and knee problems, lasted six innings, giving up three hits and three runs with four walks and a season-high six strikeouts.