By Jeremy Kahn

After a late night close victory over the Colorado Rockies in the opener, the San Francisco Giants returned for a doubleheader.

Brandon Crawford drove in three runs, as the Giants held on for a 10-8 victory over the Rockies in Game One of a doubleheader at Coors Field.

Chris Heston pitched 5.2 innings, allowing six runs on eight hits and won for the fourth time this season.

It was the eighth straight win for the Giants, their longest winning streak since winning 10 in a row in May of 2004.

The Giants jumped out to a 7-1 lead, but the Rockies came back and hit within 7-4 in the bottom of the fifth after a Charlie Blackmon hit a two-run home run.

Joe Panik and Brandon Belt helped the Giants extend the lead up to 10-4 in the top of the sixth inning, as Panik hit a single that scored Andrew Susac and then Belt hit a two-run double that extended the Giants back to six runs.

Wait Weiss’ team would not go away, as they scored two runs in the bottom of the sixth inning to get within 10-6.

After bringing Sergio Romo, the Rockies got within 10-7, when Nolan Arenado singled to score Blackmon.

Santiago Casilla came on to close the game; however Carlos Gonzalez and Troy Tulowitzki each hit singles to get the Rockies within 10-8.

Casilla then got Willin Rosario to ground out to third base as the tying run to end the game, and give Casilla his 12th save of the season.

After witnessing Casilla pickup his 12th save in the first game, a Bay Area product came up huge for the Rockies in the second game.

Daniel Descalso, who went to Mountain View’s St. Francis High School hit a two-run home run off of Yusmeiro Petit in the bottom of the sixth inning and the Rockies gained a split with a 5-3 victory.

In gaining a split of the doubleheader, the Rockies put an end to the Giants eight-game winning streak.

After two long rain delays that totaled three hours and 13 minutes for the two games.

David Hale picked up his first win as a member of the Rockies, as he went 6.2 innings, allowing three runs.

John Axford picked up his sixth save of the season in as many opportunities.

Axford gave up a leadoff single to Gregor Blanco, and after a Blanco steal of second, he was thrown out at third base on a throw by Blackmon, when Angel Pagan flew out to the center fielder.

Casey McGehee then reached on a Descalso fielding error that brought Hunter Pence to the plate as the tying run.

Pence grounded out to Descalso, who threw to D.J. LeMahieu for the final out of the game.