It was Asian Pacific Day at Bank One Ballpark, complete with pre-game hula dancers, drums and a Hawaiian song that Williams knew the words to — a song Williams said is about how Hawai'i is a good place and a place that is loved.

Inspired by that opening, the San Francisco Giants rookie pitcher was perfect through three innings, took a no-hitter into the fifth, allowed just one unearned run in six innings and won his fifth straight start.

This was no ordinary victory, either.

Williams beat the Diamondbacks and Curt Schilling, 8-1, before 45,653 air-conditioned desert fans, increasing the Giants lead to six games in the National League West. They go for a sweep today in the final game before the All-Star break.

"I was sitting down preparing for the game when I heard the Hawaiian stuff," said Williams, a former Waipahu High star. "I stood up in the dugout and watched. A lot of guys were looking at me. I said, 'yeah, that's my heritage.' "

Williams has quite a heritage. He's part Chinese, African American, Portuguese, Spanish, Norwegian, Indian, Japanese and Filipino.

"When they were singing that song, I was singing every word of it," Williams said, unable to give the name of the song to reporter. "Ya'll wouldn't understand the song. I don't know the English translation for it. It made me feel at home. I love that kind of stuff."

And the Giants love Williams' stuff on the mound.

"We have a pitcher there, the Giants have a really good pitcher there," Giants manager Felipe Alou said. "Just keep him healthy, mentally and physically — he's, what, 21 years old? — maybe for another 20 years."

Williams doesn't pitch like he's 21.

"He's got everything," Alou said. "A good curveball, a straight changeup, a good slider. He's got a variety of fastballs— straight, cutter, sinking. When you pitch like that, there's always a possibility of getting out of a big jam ... like he did today."

That big jam came in the fifth inning, with the Giants leading 3-0.

First baseman J.T. Snow made his second error in as many games to start the fifth. A single by Alex Cintron broke up the no-hit bid, another single by David Dellucci loaded the bases.

Williams struck out Chad Moeller on a devastating curveball, got Schilling to pop up for the second out and nearly escaped the inning without a run. But he walked Craig Counsell to force home a run, then struck out Matt Kata on another hard-biting curve.

"That was the best curveball I've ever thrown," Williams said. "Fortunately, I was getting people out with it."

Williams (5-1) lowered his ERA to 2.64, allowed two hits, walked three and struck out seven. Facing a pitcher like Schilling, with a big crowd, in a key division series, didn't enter into his mind.

"I wasn't looking at it like that," Williams said. "I just go out there and pitch. Whoever I'm facing doesn't matter to me. As long as I go out and pitch well. That's the No. 1 thing."

Williams got support from slugger Barry Bonds, who tied a major league record with his 12th consecutive 30-homer season. He hit a 448-foot shot over the swimming pool in right-center with one out in the fourth and added a two-run double in the seventh.

"His swing is special right now," Alou said. "He's getting around some fastballs that I don't remember any guys getting around at that age."

Bonds, who has homered in five consecutive games, has 643 homers, 17 shy of Willie Mays for No. 3 on the career list.