More than 500 men, women and children of all ages are competing in this year's championships.
One of this week's big winners has been eight-year-old Jonathan d'Ambrosio of Fountain Valley, who's going to have to clear some space in his trophy case when he gets home.
Several hundred friends and family members have also made to trip to Fresno to watch the competition.
The six-day event is expected to put about $100 thousand into the local economy.
