SAN DIEGO -- The Padres placed reliever Micah Owings on the 15-day disabled list for a strained right forearm on Thursday and selected reliever Dale Thayer from Triple-A Tucson.

The Padres also moved starting pitcher Dustin Moseley to the 60-day disabled list, making room for Thayer on the 40-man roster. Moseley underwent season-ending surgery Wednesday to repair the anterior capsule and labrum in his right shoulder.

Padres manager Bud Black said Owings' injury has been lingering. The Padres hoped rest would help his forearm, and he didn't throw for six days before he pitched Wednesday, allowing a run in 1 2/3 innings in the 7-2 loss to the Nationals. Owings again experienced discomfort, landing him on the disabled list, Black said.

"We thought, given the rest and it popping up again, it was probably going to pop up again if he went back out there," Black said.

The Padres promoted Thayer, a right-hander who was one of the final cuts in Spring Training. He has posted a 0.00 ERA at Triple-A, striking out five and issuing two walks in 8 1/3 innings.

"I was hoping I would get a chance," Thayer said. "I liked knowing that I was one of the last guys sent down, so that always gives you hope that you'll get called up sooner or later."

Thayer owns 26 innings of Major League experience, pitching with the Mets last season, when he went 0-3 with a 3.48 ERA in 10 1/3 innings. He signed as a free agent with the Padres. He also pitched 15 2/3 innings with the Rays between 2009 and '10.

"That's the message we send to our guys when they get sent to the Minor Leagues: 'When that phone rings, and it's going to some time during the year, be the guy that the Minor League people deem to be most worthy of a promotion based on performance,' and Dale has been that guy," Black said.

Thayer drove to Petco Park from his home in Murrieta, Calif. He received word of his promotion on Wednesday night -- the Tucson Padres had the day off.

Thayer carried over his successful spring to Tucson, where he got ground balls and avoided allowing a run in the high-scoring Pacific Coast League.

Venable ready for steady approach to pay off

SAN DIEGO -- Padres right fielder Will Venable has tried different approaches at the plate in past seasons.

But this season, Venable has stuck to the same approach and found consistency at the plate. He was batting .263 entering Thursday's game against the Nationals at Petco Park.

"I've been able to take the same swing every day," Venable said. "It's not always perfect. But it's the same swing with the same thought day in and day out. It's given me a chance at the plate every day. If I'm able to be consistent in my swing and my approach, then the rest of the numbers will fall into place"

While he's found consistency on offense, Venable has struggled on defense. He has already committed a career-high five errors. He committed the last miscue Tuesday on a missed fly ball. His previous career high for errors was four in 2010. In '11, he made two errors.

"It's been a combination of some misfortune, some rushing," Venable said. "I work hard every day doing my routine. Some of these things are just things you can't help. Those are the ones that you move on from.

"There have been a couple in there where I'm just going too fast, doing too much and rushing a little bit, where those are the disappointing ones. Those are the ones where I have to go back to the work I've done and just really rely on my mechanics."

Worth noting

• Padres starting pitcher Tim Stauffer threw well in a side session Thursday and remains on pace to make a rehabilitation outing on Sunday with Class A Lake Elsinore, Black said. Stauffer went on the disabled list on April 5, retroactive to April 4, for a strained right elbow.

• Padres outfielder Carlos Quentin participated in outfield drills and hit on Thursday. He is about a week or so away from a rehabilitation assignment, as he has yet to run at full speed. Quentin went on the disabled list on April 3 after right knee surgery.

"He wasn't going full speed," Black said. "He hasn't gone full speed yet. The baseball activity is increasing."

• Left fielder/first baseman Jesus Guzman was out of the starting lineup for a third consecutive game Thursday after he had two teeth removed on Monday. He had a pinch-hit single in Wednesday's game. Black said Guzman is feeling better and is available to pinch-hit again.