Marquez struggles as losing streak reaches six.

GIANTS 9, ROCKIES 2

san francisco» The mood in the visitor’s clubhouse at AT&T Park was remarkably upbeat Monday afternoon, especially given the occupant’s current state of play.

“I’m not panicking by any means,” center fielder Charlie Blackmon said. “I knew this was going to happen at some point. You can’t go out there and be unbelievably better than everybody else all season. You are going to have ups and downs. This is one of those down times, but I’m not panicking.”

But those positive vibes certainly didn’t translate onto the diamond Monday night, where the Rockies lost 9-2 to San Francisco and saw their season-worst losing streak stretch to six games.

The Giants, the National League West cellar dwellers, snapped a five-game skid of their own and also broke a nine-game losing streak to Colorado.

Once again, the Rockies failed to get anything close to a quality start.

Rookie right-hander German Marquez was gone after four messy innings (and 86 pitches), victimized by five runs off seven Giants hits, including run-scoring triples by Brandon Belt in the third and Denard Span in the fourth. Marquez faced heavy traffic in every inning but the second.

During its six-game skid, Colorado starters have combined for a 13.31 ERA, and that has left manager Bud Black, like all Rockies managers before him, searching for solutions. Before the game, he moved former starter Antonio Senzatela into the bullpen and ended up using him for two scoreless innings.

Although it sure didn’t look like it Monday night, this was the same Giants team that only eight days ago limped out of Coors Field having been swept in four games by the Rockies. That had never happened before.

At that time, the Rockies were on top of the world, and on top of the National League West. But these Rockies don’t look at all like those Rockies. Consider this: San Francisco righthander Jeff Samardzija had already faced the Rockies three times this season and was 0-3 with a 9.33 ERA. But until he ran out of gas in the seventh, Samardzija dominated the Rockies, blanking them for six innings, allowing only four hits, striking out five and walking none.

Colorado rallied in the seventh with three singles off Samardzija, including Trevor Story’s run producer. Colorado quickly jumped on reliever Hunter Strickland, loading the bases on an RBI single by Tony Wolters and a walk by Blackmon. But the rally fizzled when DJ LeMahieu grounded out to Strickland.

During their end-of-June swoon, the Rockies have been outscored 57-17.