Sayonara beat Falcon 2000 to the finish line by eight seconds - fewer than six feet - after falling more than a minute behind when restarted because of a false start.
Sayonara, owned by Larry Ellison, had a slightly easier time in the day's first windward-leeward race, beating Fancourt's Morning Glory by 33 seconds.
In the second race, Fancourt's Morning Glory lost its mast to fall off the pace, and possibly out of the rest of the Kenwood Cup since Hasso Plattner's maxi has no spare rig. Approaching the windward mark, Fancourt's Morning Glory was powering up out of the tack when the mast snapped twice.
In the Mumm 36s division, Ireland's Jameson edged out Sea Hawk High 5 from Japan and the New Zealand-based Georgia Express. In the handicap class, Ragamuffin won both of yesterday's windward-leeward races.
In the team competition, USA Red maintained its lead over New Zealand, with Australia third.
Ishii, the two-time defending champion who plays on the Japan PGA Tour, was the only one to better par at the wind-swept Mauna Kea Beach golf course.
David Chin, an assistant pro at the Navy-Marine Course on Oahu, was second at 144 after shooting par 72 yesterday. Kapalua's Dick McClean was third at 145.
Masa Kaya led the senior division with a 73-152.
Jeanette Ross landed a 220-pound marlin that was tagged and released after a 40-minute fight. Bob Ross needed fewer than 40 minutes to catch his two marlin that gave Sundown 1,200 points. The all-women's Mississippi Rebellettes were second (763 points).
The Big League World Series is held at Fort Lauderdale, Fla. and Hawaii's first game is Saturday.
Wade Taguchi, who won the tournament sportsmanship award, went 4-for-5 with two RBIs.
Estrada, who went 3-for-4 last night, led the tournament with a .609 batting average.
Iolani will represent Hawaii in the Region 8 tournament at Las Vegas, Aug. 16-20.
Morris blanked Ismael Morrow Paez, 8-0, then, down 7-4, rallied to beat Howard Vickory, 8-7.
Hawaii outslugged Ohio, 19-10, and edged Florida, 4-3.
The top 38 women are vying for $5,000. The event is co-sanctioned by the Hawaii-based Association of Women Bodyboarders.