"He's been out a long time, so just to make sure everything is all right, he'll play nine innings and just get used to the speed again," Weiss said.
After Friday's matchup against the Dodgers, the Rockies have eight games before the All-Star break. Weiss did not divulge how many rehab games Gonzalez would require.
Weiss also was looking forward to Gonzalez taking batting practice for the first time on the field Friday, and the All-Star outfielder did not disappoint. Gonzalez sprinkled line-drive home runs to all three fields, flashing the smooth swing he had struggled repeating when his bothersome finger would swell up.
He also took batting practice Thursday but in the private cages.
Gonzalez underwent surgery on June 10 to remove a benign tumor from his left index finger. He had been dealing with inflammation in the finger all season. He is batting .255 with eight home runs and 31 RBIs in 52 games.
Cody Ulm is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.