SAN FRANCISCO -- The Giants are close to making a decision whether to place Mark DeRosa on the disabled list or insert him back into the starting lineup.

DeRosa missed his seventh game Sunday with an aggravated nerve in his left wrist, which is also accompanied by numbness in his two of his fingers.

"He's doing a few things today and we will evaluate where we are with him then," Giants' manager Bruce Bochy said before Sunday's series finale with the Houston Astros. "The tendinitis has calmed down but he still has some numbness."

DeRosa received further treatment and will try to hit off a batting tee after taking a few dry swings.

"He hasn't played in awhile and it's up to us to go ahead and give him a few more days or whether we think he's ready," Bochy said. "We have to be smart about this and could just give him a few more days to make sure."

The Giants open a weeklong road trip, with no days off, in San Diego on Monday night. Bochy said that could factor into the decision concerning DeRosa's immediate future.

Runzler at home in Giants bullpen

SAN FRANCISCO -- Left-hander Dan Runzler survived his time in the starting rotation while pitching at UC Riverside three years ago and the experience helped him realize that the bullpen is where his heart is.

"I was going into my final year of college and I had changed my mechanics a little bit in the Cape Cod League," Runzler said. "The coaches at Riverside thought I could start. It lasted the first half of the season before I moved back to the bullpen."

Runzler (1-0, 3.77) made 10 starts for the Highlanders during their run to the Big West Conference title and a berth in the NCAA tournament in 2007.

"It wasn't for me," Runzler said. "I did develop a new-found respect for starters and the way they turn the lineup. The bullpen was more comfortable for me."

He's been a productive member of the Giants' bullpen and has been unscored upon in 23 of his first 26 career appearances. Entering Sunday's series finale vs. the Astros, the bullpen has not allowed a run over its past 10 innings, a span of five games.

Runzler, a ninth-round Draft pick in 2007, spent most of his first two seasons in the Giants organization at Rookie ball and low-A levels.

Last year he began a rapid ascent that found him in Augusta, San Jose, Connecticut, Fresno and, finally, in San Francisco. He's recognized as the only player in team history to have played at all five levels in one year.

"I was just happy pitching," Runzler said. "Every time I got the order, I just went to the next team. I was never in one city long enough to get to know people or to do any sightseeing."

Runzler has shown the ability to get right-handers out, limiting them to a .200 batting average in 30 at-bats. Lefties have four hits in 17 at-bats against him.