Harris lifted a total of 1,923 pounds in three power lifts - squat, bench press and dead lift.
He will represent the United States at the International Powerlifting Federation's World Championships in Austria in November.
Derek Ho of Honolulu twice attempted to better the IPF world record in the bench press in the 165-pound class, but missed on a technicality. He will try again as a member of Team USA at the World Bench Press Championships in Denmark in December.
South Carolina's Reilley Rankin was the leader with a 139.
Au had rounds of 73 and 75 for a 148 total. Further back was Anna Umemura of Honolulu at 152.
Kapua Kobashigawa-Goings is 10-for-14 in the tournament.
Kaneohe-Kahaluu plays a loser-out game today.
Team members are Cody Barrett, Michael Chock, Michael Kealoha, Jacob Mellor, Niles Nakama, Reyn Ohye, David Parrow Jr., Preston Pires, Donovan Solomon, Jon Takamura and Kelii Zablan.
The coaches are Eric Takamura, Mark Mellor, David Parrow and Cyril Pires.
The players are Jessieca Corpuz, Natalie Fujimoto, Jasmine Kapesi, Kristen Kimoto, Tracie Koide, Kristin Lai, Loihi
McKeague, Dani Mosier, Chelsey Ruth, Talia Ruth, Jaime Shibata and Jenna Skedeleski.
The coaches are Alan Ishida, Dale Ohama and Pat Oki.
Yuen earned the Region 2-1 berth by going undefeated in a round-robin, steel-tip competition with three other regional finalists at Brandy's Grill July 13.
About 20 other darts competitors from Hawaii will be in Las Vegas the weekend of Aug. 16-18 for the National 501 Singles Championship, the $45,000 North American Open and other events.
Willy Wong and Jeanine Colbert will represent Hawaii in the ADO's East-West All-Star event.
For additional information, call Mark Kane at 247-5945 or assistant coach Mike Tsai at 235-1105.