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San Francisco Giants' Nate Schierholtz stretches as he waits to take a turn in the cage during a spring training batting practice at Scottsdale Stadium, in Scottsdale, Ariz., on Wednesday, Feb. 24, 2010.(Anda Chu/Staff)

DENVER — Giants outfielder Nate Schierholtz expressed shock and regret at the arrest of his younger brother, Cainan, who remains jailed on suspicion of drunken driving and felony hit- and-run stemming from a mile-long series of collisions in Danville Sunday morning.

Witnesses told police that Cainan Schierholtz's truck hit a bicyclist, a pedestrian, two other vehicles and a light post while concerned citizens gave chase.

"Obviously, it's very upsetting," said Nate Schierholtz, prior to the Giants' game Tuesday night against the Colorado Rockies at Coors Field.

"It was shocking, to be honest, to find out after the game Sunday. ... My first thought was, 'Is everyone OK?'

"It's tough for my family. It's not easy. They've gone through a lot. It's just something very irresponsible and he's going to have to do some decent time for what he's done. I'll stick by him and support him to get the counseling he needs.

"Thankfully everyone's going to be all right. That's the most important thing, obviously. ... To be honest, it could have been a lot worse."

It's been a difficult time for the Schierholtz family. In March 2009, Nate's mother, Karen, and youngest sister, Sophia, barely escaped with their lives when their Alamo house burned to the ground in the middle of the night.

They are almost finished rebuilding the property, but television crews had been camped outside the house. The driving rampage became a high-profile story in the Bay Area, and Nate Schierholtz said he feels terrible about the impact it's having on his mother.

Nate Schierholtz said Cainan, 23, lives apart from the family in San Ramon and acknowledged he also was convicted on a DUI charge as a 17-year-old in 2004. Nate Schierholtz said nobody in the family has been able to contact Cainan while he remains jailed.

"I don't have any idea what he was doing that night," Nate Schierholtz said.

The Giants' 26-year-old outfielder received support from his youngest brother, Vai, who drove up to Denver from Colorado Springs, where he is a senior at the Air Force Academy. The brothers had dinner together Monday night.

"On the field, it's not going to affect me," Nate Schierholtz said. "I come to the field ready to play no matter what's going on outside. My focus is here.

"It's just unfortunate. ... Not very much I can do right now other than be thankful everyone's OK."

  • Right-hander Todd Wellemeyer will make one more rehab start for Triple-A Fresno today at Round Rock, Tex.

  • Utilityman Eugenio Velez has resumed baseball activities and said he is clear-headed again following a concussion July 24 at Arizona when a line drive struck him as he sat in the dugout.