CINCINNATI — Rookie Robert Stephenson fanned a career-high 11 Pirates, and Scott Schebler drove in three runs with a homer and his first triple of the season, leading the Cincinnati Reds to a 9-5 victory Friday night.

Stephenson (2-4) stymied Pittsburgh with sharp-breaking pitches in his fifth start and 19th overall appearance, allowing two runs in 5 2/3 innings.

The right-hander fanned the first six batters for a modern Reds record, according to information from the Elias Sports Bureau provided by the team. The major league record is eight by Houston’s Jim Deshaies in 1986 and the Mets’ Jacob deGrom in 2014.

Pittsburgh’s Josh Bell hit a three-run homer off Tim Adleman in the seventh, one of his four hits.

Schebler had a single, an RBI triple and a two-run homer off Ivan Nova (11-11), who gave up seven runs — matching his season high — in five innings. Adam Duvall added a solo shot, his 30th of the season. Tucker Barnhart drove in two with a sacrifice fly and a single. Nova also let in a run with a bases-loaded wild pitch.

Pittsburgh has lost 10 of 13, fading from the NL Central race. The Reds are 9-2 against the Pirates this season.

The Pirates activated Francisco Cervelli off the disabled list before the game. The catcher has been limited by soreness in his left hand and wrist. Cervelli walked and scored in the third, but left in the bottom of the inning because of a sore left thigh.