Reynolds, who appeared for the Rockies in 2008 but missed last season with shoulder problems that led to labrum surgery, was hit on the elbow by a line drive during a live batting practice session early in spring. He had to wait for the injury to heal, then spend time rebuilding his arm in extended spring training.
Reynolds had made three rehab starts, two with Class A Modesto and one with Double-A Tulsa, before the Rockies decided to halt rehab.
Before the fateful line drive in Spring Training, Reynolds appeared healthy and ready to realize what the Rockies planned for him when they selected him out of Stanford.
"To hear things like the ball is coming out, he's throwing more strikes, he's throwing more aggressively, he's locating his pitches better than at any point since he was signed, it was discouraging to see that kid hit with that line drive," Rockies manager Jim Tracy said. "He had worked hard.
"If he keeps working at it, we'll get him back to that."
Tracy also said Eric Young Jr., who has been on the 15-day disabled list since May 15 with a stress fracture in his lower right leg, is pain-free. The Rockies will have him undergo an x-ray this week to determine how aggressively to have him return to baseball activities.