SCOTTSDALE, Ariz. -- Josh Collmenter tossed a pair of innings Wednesday and showed no lingering effects from the forearm tightness that caused him to be scratched from his last start.

Collmenter, expected to be the D-backs' fifth starter, allowed three runs on three hits to the Rockies over two innings.

"My arm felt real good," Collmenter said. "It felt good warming up in the bullpen and good out there. It was just a matter of, I guess, executing and taking care of that, as opposed to worrying about my arm."

All the runs came in the first inning. After Dexter Fowler drew a walk to lead off the frame, Jonathan Herrera legged out an infield single and Carlos Gonzalez followed with a three-run homer.

"It felt like I hadn't been on the mound in a while, and I think in the first inning I was little excited, kind of jumpy," Collmenter said. "Really tried to settle that down in the second inning and had a little more success after that."

Collmenter retired the side in order in the second.

Arizona pitchers aware of protecting Upton

SCOTTSDALE, Ariz. -- The D-backs appear to be serious about protecting Justin Upton.

The outfielder was plunked 19 times last year, tying him for first in the National League, and earlier this spring Arizona starter Daniel Hudson said he and his fellow pitchers had taken note.

Wednesday afternoon Upton was hit for the second straight day, this time by San Diego's Joe Wieland in the fourth inning.

In the seventh, after he had retired the first two batters of the inning, setup man David Hernandez plunked left-handed hitter Will Venable.

Home-plate umpire Alan Porter immediately issued warnings to both teams.

"Kind of," Hernandez said when asked if he was surprised by the warning. "I didn't really know that if I hit somebody, I was going to get a warning. I just know 'J' got hit. For me, in the spring, I've been trying to get the ball in to lefties. That's been a weakness for me. I got the ball in to the first lefty I faced. That's something I've got to work on."

And the pitch to Venable?

"I kind of spun off of it and yanked it," he said. "Got him."

Hernandez maintained there was no intent to hit Venable, but he did acknowledge that the D-backs pitchers were aware of how often Upton had been getting hit.

"You've got to keep a running tally in your head, that's about it," he said. "As a pitcher, you definitely have to protect your guys, but I was trying to go in and it got away and it hit him."

The D-backs and Padres play one more time this spring and then face each other 18 times during the regular season.

D-backs to be featured on MLB Network

SCOTTSDALE, Ariz. -- The D-backs will be the focus of MLB Network's 30 Clubs in 30 days segment Thursday.

The one-hour show, which will be hosted by Matt Vasgersian with analysts Larry Bowa and Kevin Millar, will focus on whether the D-backs can defend their National League West title.

The network was at Salt River Fields this week interviewing GM Kevin Towers, outfielder Justin Upton, third baseman Ryan Roberts and pitcher Trevor Cahill.

"They're not going to be sneaking up on people this year, so they're going to bring their 'A' game every night because they're going to get the 'A' game from the opposition," Bowa said. "It's going to be a dog fight in the NL West, and I think Arizona can be in contention for one of those Wild Cards."