Elias Diaz hit a grand slam, Kyle Freeland got his first win in more than a month and the Colorado Rockies beat the Chicago Cubs 13-6 on Tuesday night.

Freeland (2-6) pitched five innings and earned his first win since June 28 before being removed with a left foot contusion. He was hit by a line drive with one out in the fifth, finished the inning and was replaced after throwing warmup pitches in the sixth. He allowed two runs on four hits and struck out five.

X-rays on the foot were negative.

Sam Hilliard also homered and C.J. Cron had three hits and three RBIs for the Rockies.

Ian Happ homered for the Cubs, who played most of the game without manager David Ross, who was ejected in the second inning by home plate umpire Adam Hamari.

Hamari had issued a warning to Ross when Patrick Wisdom was batting, and then Ross started yelling after a strike call on the first pitch to Happ.

Hamari tossed him and Ross came out to argue with Hamari before heading to the Cubs clubhouse.

Chicago starter Zach Davies (6-8) allowed seven runs on six hits in four innings. The Cubs have lost six of their last seven -- three of their last four since the trade deadline.

Chicago RHP Alec Mills (4-4, 4.55) will make his first start and appearance against the Rockies on Wednesday. Colorado RHP Jon Gray (7-6, 3.62) is facing the Cubs for the third time in his career and first time since 2018.