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4/30/2014 2:06 A.M. ET

Rosario available off bench against D-backs

PHOENIX -- Rockies manager Walt Weiss said that Wilin Rosario would be available for Tuesday night's second game of a three-game series against the D-backs at Chase Field a day after he learned that the injury to the catcher's left hand was a contusion rather than a fracture.

For the second consecutive night, Jordan Pacheco started behind the plate.

On Monday, Weiss said it was doubtful that Rosario could swing a bat, but he could be used in a pinch as a defensive replacement. That changed a bit on Tuesday.

"Today, he's swung the bat. He hasn't taken batting practice or anything, but he's taken some dry swings," Weiss said. "He's getting better."

When asked whether Rosario would be able to hit in the game, Weiss said, "He'd have to if we put him in there to catch. Yeah, he's OK. He's available to use in the game if we need him."

Rosario injured the hand swinging the bat this past weekend in Los Angeles. He's batting .244 with three homers and 13 RBIs in 22 games.

Charlie Culberson remains Weiss' emergency option behind the plate.

Chatwood leaves start with right elbow tightness

PHOENIX -- The Rockies will wait until Wednesday to further evaluate the condition of right-hander Tyler Chatwood, who left Tuesday night's game at Chase Field against the D-backs with the bases loaded and none out in the sixth inning because of tightness in his right elbow.

The injury was eerily similar to the elbow inflammation that put Chatwood on the disabled list for the month of August last season. He was scratched from his last start of 2013 because of the injury and subsequently had surgery to remove a chip from that elbow this past October.

"Chatty had some tightness in his elbow, so we wanted to get him out at that point," Rockies manager Walt Weiss said after his club won 5-4 at Chase Field on a ninth-inning homer off the bat of Drew Stubbs. "We'll re-evaluate him tomorrow."

Asked if he expected Chatwood to undergo an MRI, Weiss reiterated, "Not at this point. We'll re-evaluate tomorrow."

Chatwood walked Aaron Hill, allowed an Eric Chavez single and walked A.J. Pollock to load the bases. After throwing ball one to Chris Owings, Rockies trainers and Weiss went to the mound and removed him in favor of right-hander Chris Martin.

"I was going to give [Chatwood] another hitter because he's been one of our best ground-ball guys," Weiss said. "It's a tough spot to bring in a kid with the bases loaded and nobody out. I was going to give Chatty an opportunity to get a double-play ball and then go from there. It worked out where Martin came into the game and was fantastic."

After an extended warmup, Martin retired the next three batters on six pitches to get out of the jam.

Martin came on with a 1-0 count to Owings, who jumped on the first pitch and grounded to third baseman Nolan Arenado who turned it into an easy force at the plate. Pinch-hitter Roger Kieschnick struck out and Tony Campana grounded out.

Chatwood already spent a stint on the disabled list this season because of a strained left hamstring suffered while running the bases near the end of Spring Training. He was reinstated on April 13 and is 1-0 with 4.50 ERA this year in four starts.

No timetable for Cuddyer, but Weiss optimistic

PHOENIX -- Rockies outfielder Michael Cuddyer is due to come off the 15-day disabled list on Saturday. He's been out with a strained left hamstring since April 18.

And even though manager Walt Weiss seemed optimistic on Tuesday that Cuddyer would make that Saturday activation date, Cuddyer didn't sound so sure.

"I'm getting there. It's getting better. But there's no timetable," Cuddyer said.

Cuddyer injured his leg in a game against the Padres about a week and a half ago and hasn't played since then. He was batting .317 with three homers and 10 RBIs in 16 games before the injury.

"He's getting better, he's getting better," Weiss said. "I don't know exactly what the date is that he's eligible to come off, but he's definitely improving."

When told that Cuddyer had said there was no timetable for his return at this point, Weiss said, "No, I think he'd be ready around the time he's eligible to come off. He'll probably need to get some at bats, but I think he'll be ready pretty soon."

Cuddyer is one of three Rockies currently on the DL. Pitcher Jhoulys Chacin has been on the 15-day since the end of Spring Training with a right shoulder strain, and staffmate Brett Anderson is on the 60-day with fractured left index finger.

Barry M. Bloom is national reporter for MLB.com and writes an MLBlog, Boomskie on Baseball. Follow @boomskie on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.