By Jeremy Kahn

SAN FRANCISCO-Madison Bumgarner not only pitched a good enough for his second win of the 2014 season, but he helped out his own cause at the plate.

Bumgarner drove in the first run of the game with a long sacrifice fly to left field that Carlos Gonzalez caught at the left-center field wall, but it was the at-bat in the bottom of the fourth inning that shocked the crowd at AT&TPark.

The 24-year old hit a Jorge De La Rosa offering deep into the left field bleachers in the bottom of the fourth inning for his third career home run, and first career grand slam and the San Francisco Giants came back from a 3-0 deficit to defeat the Colorado Rockies by the final score of 6-5 before a sellout crowd of 41,707, the 250th consecutive sellout at AT&T Park.

It was the first grand slam by a Giants pitcher since Shawn Estes connected for one on May 24, 2000.

“It felt pretty good,” said Bumgarner about the swing that he connected on the grand slam versus De La Rosa to give the Giants.

The last time was Bumgarner hit a grand slam was while he was in the minor leagues.

Bumgarner’s grand slam came after Pablo Sandoval singled to lead off the inning, Michael Morse then walked, after fly out to centerfield by Hector Sanchez, then Brandon Belt struck out for the second out of inning, Brandon Hicks then was hit by a pitch to load the bases, then Brandon Crawford walked to score Sandoval and then Bumgarner launched the first pitch he saw from De La Rosa into the left field bleachers to give the Giants a 6-3 lead.

Crawford led off the inning with a triple into the big part of the ballpark that is known as Triples Alley, a whopping 421 feet from home plate.

Bumgarner pitched six innings, allowing four runs on nine hits, walking two and striking out seven and won for the second time this season without a loss.

His counterpart, De La Rosa pitched 4.1 innings, allowing six runs, scattering just four hits, walking two and striking out six, as he fell to 0-2 on the young season.

While Josh Rutledge was being picked off at first base by Bumgarner, who threw to Belt and in turn threw to Crawford, who tagged out Rutledge, Brandon Barnes was scoring from third base.

Barnes led off the game with a single off of Bumgarner, advanced to third on a single by Rutledge and then scored while Rutledge was picked off.

Carlos Gonzalez then gave the Rockies a 3-0 lead in the top of the third inning, as he planted a Bumgarner offering into San Francisco Bay, also known as McCovey Cove that scored Rutledge just in front of him.

Rutledge singled for the second time in as many at-bats, and then Gonzalez sent one into the water for his fourth home run of the season.

Sergio Romo came in top of the ninth inning, and proceeded to strike out the side for his third save of the season.