The Billabong Pro was the 25-year-old West Australian’s fourth title heading into his third year on the tour.
Robinson finished last year ranked world No.3 but is the man to beat and will wear the yellow jersey at next week’s Sunset Pro,also in Hawaii.
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While the final was a low-scoring affair in blustery conditions with surfers robbed of the usual barrels that Pipeline produces,Robinson earned the title.
He beat former Pipeline trophy winners and world champions Gabriel Medina and John John Florence to get to the final.
In a grinding 40-minute decider,Robinson’s best two waves scored 9.17 while his good mate Fioravanti,in his first final,could only manage 7.47.
“It’s so special,I dreamed of this for a long time,” Robinson said.