What the right-hander saw when he reviewed the video surprised him.
"My arm angle was really over the top, not three-quarters like it used to be," Webb said. "It didn't feel like it was like that, but you could see it on the video."
Webb, who had shoulder surgery last August and has not thrown off a mound since March 4, said that recently he has felt like he has taken big steps forward in his rehab.
"I'm basically having to relearn how to pitch," Webb said. "That's what it feels like. I'm relearning my mechanics."
There is still no timetable for Webb's return.