Fujikawa birdied two of the final three holes to finish the 54-hole tournament at 11-under 205. Hawaii professional Greg Meyer (67) was second.
Meyer, a four-time Pearl Open champion, collected the first-place check of $12,000 because Fujikawa is an amateur. Japanese professionals Azuma Yano and Yoshinobu Tsukada tied for third at 8 under.
Fujikawa, a Moanalua High School sophomore, started the day in fourth place after rounds of 69 and 68.
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