SAN FRANCISCO — While disappointed by the Rockies’ painful start, general manager Dan O’Dowd said Monday there are no plans for a major shake-up involving the coaching staff.

“It’s been frustrating for everyone involved, for our fans, for the players, for everyone. But I don’t sense that we are that point (where there would be changes). That’s not how we do business,” O’Dowd told The Denver Post. “No doubt that we have to find a way to get some wins and hang in there. I believe the talent is there. That’s what scouts who come in and see us tell me. We need the pieces of the puzzle to fit.”

The Rockies are historically patient with personnel decisions and almost never act during the season. Clint Hurdle was fired as manager 46 games into 2009 when O’Dowd determined that Hurdle “had lost the clubhouse.” That team also entered the season with playoff expectations, while this year’s Rockies began spring training as longshots in a division with three stronger teams — Arizona, San Francisco and Los Angeles — in front of them.

Not wanting the distraction of having the manager begin the season in the final year of his contract, Rockies ownership awarded Jim Tracy an “indefinite extension” in spring training that guaranteed his deal at least through next year. Ownership indicated it would like Tracy to work with the franchise as long he wants, though it was never specified that he would remain as manager.

After a respectable 10-9 start, the team has spiraled downward, traced to poor starting pitching and minimal offense on the road. Overwhelmed by two nine-game homestands at Coors Field, Colorado’s rotation entered Monday with a 5.58 ERA (ranking 27th overall) and a .301 batting average against (second-worst in baseball).

O’Dowd knew the rotation was going to be a work in pro- gress because of youth, but he didn’t foresee the limited contributions from veteran pitchers Jeremy Guthrie, who returns from the disabled list tonight, and Jhoulys Chacin.

“The (shoulder) injury to Jeremy (on April 27) threw it off balance. It’s not like he did it on purpose. But it hurt. And we expected Jhoulys to be better,” O’Dowd said. “And when (Guillermo) Moscoso didn’t give us quality innings, it created problems.”

Chacin landed on the disabled list and hasn’t begun throwing as he strengthens a biceps injury in Denver. Mos- coso was demoted to Triple-A, where he’s beginning to show the fastball command he had last season with Oakland.

Left-hander Drew Pomeranz, the centerpiece of the Ubaldo Jimenez trade, threw six shutout innings for the Sky Sox on Sunday. He’s being counted on to give the big-league staff a boost, but not until he has fixed some mechanical issues.

“We want him to get more upright in his delivery to create more downhill plane. He was getting on the side of the ball and trying to live on deception and the action of his pitches, and that’s not him,” O’Dowd said. “And like all of our pitchers, we need him to throw more strikes.”

The walks and subsequent longer games have played a role in the Rockies’ poor defense. The team’s 26 errors are tied for eighth-most overall.

Colorado’s lineup, so potent during the last homestand, has been unable to gain traction on the road. Through the first six games on this trip, the Rockies were hitting only .234 and averaging just three runs.

“I think it’s a consistent pattern of inconsistency. When we have pitched, we haven’t hit. And when we’ve hit, we haven’t pitched well,” O’Dowd said. “It’s been hard. But I believe we will turn it around.”

Troy E. Renck: 303-954-1294 or trenck@denverpost.com