"He's got some facial injuries," manager Walt Weiss said. "He's going to be OK, but he doesn't look pretty."
Lyles hasn't rejoined the team since the accident occurred. After a successful live bullpen session Friday, Lyles was tentatively scheduled to begin his rehab assignment with Double-A Tulsa on July 18.
Lyles also fielded grounders and received the ball Friday for the first time since fracturing the third metacarpal in his glove hand during a play at the plate on June 4. But upon viewing those X-rays after the live batting practice session, the Rockies ultimately elected to give him a little more time.
The team wanted him to make a total of three rehab starts, with the third possibly coming for the Rockies with a pitch count against the Cubs on July 28. That would be similar to the path that Anderson took following two sharp rehab starts, but the move to the 60-day DL pushes Lyles' timetable back a week.
Lyles' earliest return date would now be Aug. 4, an off-day for the Rockies. His move to the 60-day also ensures that left-hander Franklin Morales remains in the rotation for at least two more starts than the team anticipated.
Lyles had totaled a 5-1 record and 3.52 ERA in his first 11 starts with the Rockies since the team acquired him and outfielder Brandon Barnes from the Astros in a deal for outfielder Dexter Fowler.
Cody Ulm is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.