The 15-year-old ended Spencer's hopes of a three-peat in dramatic fashion and takes the No. 1 spot to start 2018.
Former event winners and standouts prepared for battle at Alan Shepard Park.
Each of the last two years, the Carlsbad surfer spent her birthday in Cocoa Beach -- with back-to-back wins.
The sixth annual Ron Jon Quiksilver and Roxy Junior Pro continues alongside the men's QS.