SAN FRANCISCO — If Tim Lincecum is snubbed for the National League Cy Young Award this season, he will be in excellent company.

Juan Marichal didn't need a trophy to tell him how good he was, either.

Lincecum is putting together a season that few peers have in a half-century of Giants baseball in San Francisco. He dominated the San Diego Padres once again for eight innings in a 5-0 victory Friday night, lowered his NL-best 2.48 ERA, added to his major league leading total of 200 strikeouts and he equaled the second-best winning percentage by a Giants pitcher through 17 decisions.

His 14-3 record is tied with Marichal (1968) and Scott Garrelts (1989). Only Gaylord Perry (15-2 in 1966) owned a better record through 17 decisions.

And who knows? If Lincecum continues to sparkle in September, he stands a good chance of overtaking Cy Young favorite Brandon Webb. He'd become just the second Giants pitcher to win the Cy Young Award, joining Mike McCormick in 1967.

Bengie Molina hit a two-run double and left-handed batting Travis Ishikawa showed strength by lining a three-run home run to the opposite field as the Giants took command in a five-run fourth inning.

The Giants won their third consecutive home game, something they'd accomplished just two other times this season. They would equal their longest winning streak of the season with a victory Saturday.

If the Padres happen to face Lincecum one more time in September, San Diego manager Bud Black could be inundated with a lot of sudden cases of flu-like symptoms. Lincecum has wrecked the Padres this season, posting a 0.79 ERA in four starts against them.

He has a 1.13 ERA in eight career starts but picked up just his second victory against them Friday night.

Lincecum maintained terrific stuff to the end, popping the glove at 96 mph while striking out the side in the seventh inning. He held the Padres to four hits and struck out eight, becoming the first Giants pitcher to record a 200-strikeout season since Jason Schmidt in 2004. Schmidt finished with 251 strikeouts that season.

Lincecum faced his toughest jam in the third inning after second baseman Emmanuel Burriss committed a fielding error and Luis Rodriguez lined a two-out single. Brian Giles popped up to Ishikawa to end the inning.

Molina broke a scoreless tie when he swatted a chin-level pitch from Cha Seung Baek to the wall in left-center field. After Pablo Sandoval singled, Ishikawa effectively put the game out of reach. He hit a first-pitch fastball over the left field wall for his second home run in eight games since joining the club from Triple-A Fresno.

It was the kind of knockout punch the Giants have seldom thrown this season.

They have just one grand slam all year (by John Bowker) and they hadn't hit a home run with more than one runner on base since July 3, when Rich Aurilia connected for a three-run shot against the Cubs.

Before Ishikawa's blast, 11 of the Giants' last 14 home runs were solo shots; the other three were two-run homers.

The Giants pushed Lincecum a little bit, allowing him to hit for himself in the seventh inning. He doubled to the wall but did not come out for a pinch runner.

He walked two batters in the eighth before completing the inning with his pitch count at 115. He walked off the mound to a standing ovation.

Keiichi Yabu preserved the shutout in the ninth, snagging a line drive from Japanese countryman Tadahito Iguchi for the final out.

Sandoval, who received a trial at third base to keep his bat in the lineup, singled twice to register his fourth multi-hit game in seven starts; he's hitting .524 over a six-game hitting streak.

Sandoval also showed off a cannon while making throws across the diamond.

He had the second-best arm on the field Friday.