DENVER — Barry Zito was very good during most of last season, and even better in the postseason when he went 2-0 with a 1.69 ERA in three playoff starts.
Now, the San Francisco left-hander can only shake his head in disbelief as he struggles through this season.
In his second start since returning to the Giants' rotation, Zito allowed five runs and nine hits and struck out one in four innings of San Francisco's 6-1 loss to the Colorado Rockies on Monday night.
The last time Zito won on the road was in St. Louis — during last year's NLCS. He is 0-8 with a 9.61 ERA on the road this season and has no answers for his troubles.
"I don't know. I don't know," Zito said. "I've looked at tape of my starts in the playoffs and my starts this year. I've made more pitches this year without the results."
Colorado's Todd Helton homered to move within three hits of 2,500.
Juan Nicasio tossed six shutout innings and added an RBI single, and Charlie Blackmon also homered for the Rockies.
"He left some pitches up and he paid for them," San Francisco manager Bruce Bochy said of Zito (4-10). "He had trouble with the left-handed hitters."
Buster Posey singled and reached base for the 49th straight game against Colorado.
Zito worked out of trouble in the first inning before the Rockies got to him in the second.