By Jeremy Kahn

PITTSBURGH-Three swings of the bat by the Pittsburgh Pirates sent the San Francisco Giants to a demoralizing defeat.

Starling Marte hit a George Kontos pitch over the left field wall on the first pitch, as the Pirates defeated the Giants 4-3 before a sellout crowd of 38,259 at PNC Park.

“Made little one mistake that wasn’t quite executed as much as well as well I would have liked,” said Kontos.

It was a tough loss for the Giants, who dropped to 2-4 on their seven-game road trip that ends on Sunday night.

Mike Leake came back from a 19-day layoff and pitched six strong innings, allowing one run on just one hit, walking one and striking out six.

“Control wasn’t completely there, a little sporadic, yanking balls, Buster (Posey) did a good job, mix and matching,” said Leake.

The only hit that Leake allowed was a solo home run to Jung Ho Kang that broke up Leake’s shutout and no-hitter at the same time.

It was a big day for Kang, as he hit two home runs on the afternoon, for his first multi-home run game of his young career.

Ehire Adrianza drove in the first run of the game for the Giants in the top of the fifth inning, as he drove in Gregor Blanco, who led off the inning with a single, stole second and advanced to third on a throwing error by former Giants catcher Chris Stewart.

The Giants tied up the game in the top of the eighth inning, as Matt Duffy walked went to second on a Brandon Belt single, advanced to third on a Buster Posey double play and then scored the tying run on a wild pitch by Joakim Soria with Marlon Byrd at the plate.

Kang gave the Pirates their first lead of the game in the bottom of the seventh inning, as he took a Hunter Strickland pitch over the left-center field wall for his 12th home run of the season.