DENVER — Madison Bumgarner has endured more than his share of bad luck in a season full of misfortune for the Giants.

"I feel like I have been through a tough stretch," Bumgarner said. "We talk about things like this and there is always the feeling that thing would come around."

It didn't on Wednesday night.

Jhoulys Chacin did not allow a hit for 6 2-3 innings and hustled for a crucial RBI to help the Colorado Rockies beat the Giants 5-4.

"The defense got us the one inning," San Francisco manager Bruce Bochy said. "We did come back and I thought we were going to pull it out there," but we came up short."

Bumgarner (11-9) was effective until the sixth. He allowed just three hits, including Nolan Arenado's RBI double in the second before Colorado tagged him.

Chacin (13-7) tied a season high with nine strikeouts. Brandon Crawford's single to center field was the only hit Chacin allowed in seven innings.

"I knew he had a no-hitter going," said Crawford, who singled on a 1-2 pitch. "It was nice to get us on the scoreboard."

Chacin, who yielded an unearned run, retired Roger Kieschnick to end the Giants seventh.

"Chacin has good stuff," said Brandon Belt, who drew two walks off him. "He doesn't leave anything really in the middle. He nibbles around a little bit and makes you go after his pitch."

Troy Tulowitzki and Wilin Rosario had two hits each for Colorado, which built a 5-1 lead through six innings.

DJ LeMahieu led off the inning with a single, Tulowitzki walked and Rosario hit a bloop single to center to make it 2-1.

Jean Machi entered and got Arenado to hit a comebacker, but Crawford dropped the throw to second to load the bases. Yorvit Torrealba's ground-rule double made it 4-1, and after an intentional walk, Chacin beat out a potential double-play ball at first for another run.

The Giants nearly left Chacin with a no-decision when they rallied for three runs in the eighth. Belt hit an RBI double, Buster Posey drove in another run with a groundout and Pence singled to make it 5-4.

Rex Brothers worked the ninth for his 14th save.

While Chacin was baffling the Giants, the defense behind him was suspect.

Rosario, starting at first base for the third time this season, mishandled two straight grounders to start the third. Chacin got Bumgarner to pop up a bunt attempt, struck out Gregor Blanco and got Marco Scutaro to ground out to end the inning.

The Giants capitalized in the fourth. Belt walked and went to third when Tulowitzki fumbled Posey's potential double-play grounder.

Pence hit into a double play to score Belt and make it 1-all.

NOTES: Pence went 1 for 4 with an RBI and is hitting .318 with two home runs and 19 RBIs since the All-Star game. ... Hideo Nomo has the only no-hitter at Coors Field on Sept. 17, 1996, while with the Los Angeles Dodgers. ... Giants OF Andres Torres had surgery to remove bone spurs in his left Achilles. Carolina Panthers orthopedist Dr. Robert Anderson performed the surgery. Torres is expected to be sidelined for six months.

What they say about Steve Baxman

“I love Steve. He’s our local hero. I jokingly say he sleeps with his boots on. He’s always ready to come out and take care of people.”

Diane Barth, longtime Monte Rio resident

“He’s no stranger to controversy. I’ve defended him a number of times. (But) I tell people if you’re the one who goes over a cliff or find yourself in a perilous situation of any kind, he’s the face you want to see.”

Andy Pforsich, former Gold Ridge fire chief

“As good or bad or difficult as some of the calls might be, he finds a way to lighten the mood. He doesn’t take away from the seriousness, but he lessens the heartache of people involved, patients and responders.”

Sean Grinnell, Bodega Bay fire chief

“I think my brother has done a tremendous amount of good but he doesn’t do this alone. He has a wonderful supporting cast that never gets any credit.”

Deanna Baxman, retired Cal Fire division chief

“Sometimes you have to realize when politically you have to watch what you say. Steve doesn’t care.”

Dan George, Gold Ridge fire chief

“It’s very helpful when Steve shows up. He can keep a crazy situation calm. If we get a call at three in the morning chances are he’s there. I don’t think the guy sleeps.”

Dan Mori, Sonoma County sheriff’s deputy

“Some people love to hate him. But they call him, not 911. What does that tell you?”

Max Ming, Russian River fire chief

“He’s a true legend. I don’t know what he’s made of but he’s definitely made of something else.”

Efren Carrillo, Sonoma County supervisor

“He can never be replaced. He’s been doing it over 40 years now. No one can fill those shoes.”

Marshall Turbeville, Cal Fire battalion chief

“He’s a character. It leads people to not think he is the real deal. He is the real deal. He’s one of the legends of Sonoma County.”

Jack Piccinini, chief of Windsor and Rincon Valley fire districts

“He’s not talking out of the side of his mouth. You get what’s in front of you. I think he’s been a remarkable resource for the county.”

Ray Mulas, Schell‑Vista fire chief