PHOENIX -- In an effort to move along his rehab process, Brandon Webb recently had video taken of one of his throwing sessions.

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.

Upton leaves game after fouling ball off leg

PHOENIX -- D-backs right fielder Justin Upton left Sunday's game with the Phillies in the sixth inning, one inning after fouling a pitch off his left leg.

In the bottom of the fifth, Upton swung at a 1-0 offering from Kyle Kendrick and appeared to foul it off his left ankle. While the team said he had a shin bruise and manager A.J. Hinch said it hit the foot, Upton said he hit "the top of the foot, ankle area." Upton hit a ball off the same spot Saturday.

"You do that two nights in a row and you're going to feel it," Upton said.

He immediately went down to the ground, but got up quickly after being examined by assistant athletic trainer Dave Edwards.

Upton wound up drawing a walk in the at-bat and scored one batter later when Mark Reynolds hit a three-run homer to center.

When the D-backs took the field for the top of the sixth, Cole Gillespie was in right field in place of Upton.

"I just didn't feel like I could move around as well as we needed in a tight game like that on a fly ball or a first to third," he said.

Upton is listed as day-to-day, but said he hopes to be in the lineup on Monday when the D-backs open a three-game series against the Rockies at Coors Field.

"I'm obviously going to be in [the training room] early tomorrow trying to get some movement in it," Upton said. "The plan for me, I don't know what A.J. has planned, but the plan for me is to get back out there."

D-backs in midst of 20 games in 20 days

PHOENIX -- The D-backs are beginning a stretch that will see them play 20 games in 20 days and that's just fine with manager A.J. Hinch.

"We've had enough off-days in April to be fresh, so I don't think it's too taxing on us," Hinch said.

The stretch, which started Friday, includes an 11-game, three-city road trip to Denver, Chicago and Houston which begins Monday.

"We're going to need to play well," Hinch said. "It's going to test your bullpen, it's going to test the bench. I expect us to go on the road and pull this together. I'm kind of waiting for that stretch where we get hot, win a few games in a row, win a few series in a row."

Arizona was 1-5 on its last road trip, a swing to Los Angeles and San Diego.