CHICAGO (AP) - Rene Rivera hit a grand slam, Anthony Rizzo added a three-run triple and the Chicago Cubs held off the Atlanta Braves for a 14-12 victory on Saturday in Jon Lester's return from the disabled list.

Javier Baez and Jason Heyward also homered for the NL Central-leading Cubs, who have won six straight and 12 of 15 overall. Rivera, Rizzo, Baez and Heyward finished with two hits apiece.

Lester (9-7) allowed four runs and eight hits in five innings in his first start since Aug. 16. He had been sidelined by tightness in his left lat and general shoulder fatigue.

Freddie Freeman, Matt Kemp and Rio Ruiz homered for Atlanta, which has dropped six of eight. Rookies Ozzie Albies and Dansby Swanson had three hits apiece, and Nick Markakis had two hits and drove in two runs.