Paul DeJong homered to cap a six-run burst in the seventh inning and the St. Louis Cardinals pulled away from the Arizona Diamondbacks 7-1 Monday night.

St. Louis had lost six of seven before beating the team with baseball's worst record. The Diamondbacks, who have won just once on the road since April 25, have lost 22 of 24 overall.

It was 1-all when Edmundo Sosa opened the St. Louis seventh with a double-off reliever Alex Young (2-6) and moved up on a sacrifice. Dylan Carlson hit a line drive just out of the reach of drawn-in second baseman Eduardo Escobar for a go-ahead single.

Paul Goldschmidt added an RBI single, Yadier Molina hit a two-run double with two outs and DeJong followed with a two-run homer.

Giovanny Gallegos (5-1), the fifth of seven Cardinal pitchers, went one inning.

Carlson hit an RBI triple in the third for 1-0 lead. Right fielder Pavin Smith tried to make a diving catch on the ball and it rolled to the wall for Carlson's third triple this season.

The Diamondbacks tied it when Josh Rojas homered in the fifth to chase Wade LeBlanc.

The 36-year-old LeBlanc pitched 4 1/3 innings in making his first National League start since 2013 when he was with Miami. He took the rotation spot of John Gant, who was moved to the bullpen.

Harrison Bader (right rib hairline fracture) is headed to Memphis for the next step of his rehab assignment. After playing at Low-A Palm Beach, Bader came back to St. Louis and had a re-evaluation Monday. Bader is likely to return sometime this week.

Carlos Martinez (3-9, 6.78), who has a five-game losing streak, is 3-1 with a 2.76 ERA in seven career starts against the Diamondbacks.