MOOSIC, Pa. — Dan Johnson’s home run provided the winning margin in the first game, and he capped Scranton/Wilkes-Barre’s big inning in the nightcap with another homer as the RailRiders swept their International League doubleheader with the Buffalo Bisons, 6-5 and 6-2.

The veteran former big leaguer hit a two-run homer that gave the RailRiders a three-run lead in the opener and they held on with some timely defensive plays. The Bisons had a runner cut down at the plate on a throw by center fielder Melky Mesa and the potential tying run was erased when pinch-runner Eugenio Velez was caught stealing in the seventh.

Scranton/Wilkes-Barre scored five times in the third inning of the nightcap. The outburst included Johnson’s eighth homer of the season. He also doubled and scored in the sixth as the RailRiders gained a split of the four-game series between the North Division teams here. Mesa also homered for Scranton in the first game.

Moises Sierra brought the Herd to within a run (6-5) in the seventh inning of the opener with his sixth home run of the season after a leadoff walk to Jimenez. The IL home run leader hit his 17th of the season to provide all the Buffalo scoring in the nightcap.

Scranton’s big inning spoiled an otherwise strong start by Bisons right-hander Todd Redmond (1-1), who was making his second start for the Herd. Redmond struck out seven of the 17 batters he faced in four innings, throwing 45 of 60 pitches for strikes.

Ivan Nova (2-0), a 16-game winner in 2011 for the New York Yankees, was the winning pitcher in the first game. Losing pitcher Chad Jenkins (0-2) was left with a 10.24 ERA after his second start.

Today is a travel day for the Bisons, who open a four-game series at Pawtucket Thursday night.