Bill deBoisblanc, longtime yo-yo player and National Grand Master of the sport, was the head judge Saturday at the California State Yo-Yo Championships at San Francisco's Exploratorium science museum. Some 100 yo-yoers participated in an attempt to spin their way into the U.S. National Yo-Yo Contest , which takes place in October in Chico, Calif.
Caption text by James Martin of CNET News.com.
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