The Colorado Rockies are not ready to place right-hander Ubaldo Jimenez on the disabled list. But their thinking could change Tuesday if Jimenez is still bothered by the cut on the cuticle of his right thumb.

Jimenez is scheduled to start Thursday in Pittsburgh, but the Rockies want to determine whether his cut is better and whether he can let the ball go properly in his bullpen session, according to a major league source.

The idea of placing him on the DL, the source said, would be to “get it right.” Jimenez missed a start in spring training because of the same issue, and the Rockies do not want it to linger.

A scout who attended Jimenez’s Opening Day start against the Arizona Diamondbacks said the pitcher dramatically lost velocity in his sixth and final inning, showing “zero arm speed.” Jimenez went from 92-93 mph — and topping out at 95 — to 86-88, the scout said.

Rockies officials, too, were baffled by Jimenez’s sudden drop in velocity, thinking their ace was throwing all changeups. But, except for his thumb, Jimenez is said to be fine.

— Ken Rosenthal