starting pitcher threw off the mound for the first time since his arm surgery.
Webb told MLB.com that the session went well but he thought about his arm slot during each throw.
This is good news for Webb's keeper league owners as Webb continues to progress after missing almost all of 2009.
Keep an eye on Webb during Spring Training to make sure his mechanics are solid, particularly his slider.
Webb believes that, on the current track, he will be ready for the start of the season.
