A gutsy Gaby Lopez poured in a 25-foot birdie putt on the seventh playoff hole to claim the season-opening Diamond Resorts Tournament of Champions.
The final round Sunday seemingly set up as a head-to-head clash between Park and compatriot Sei Young Kim, who was hoping to bookend her victory at the LPGA's 2019 season-ending CME Group Tour Championship with a win at the LPGA's 2020 season opener.
Starting the final round 3 shots behind Park, Hataoka chipped away at the lead as Park wrestled all day with a balky putter at Four Seasons Golf and Sports Club Orlando.
Nasa Hataoka and Gaby Lopez matched par five times in a playoff at the 197-yard 18th hole until it was too dark to continue.
The playoff that will resume on Monday is the LPGA's longest since Pernilla Lindberg defeated Park in eight holes at the 2018 ANA Inspiration. The longest was 10 holes at the 1972 Corpus Christi Civitan Open.
She even backed off a bit behind the tee markers on the seventh playoff hole, striking a 3-hybrid exactly as she designed.
But Lopez, whose ball barely made the putting surface, went first, her putt up the hill slowing and tumbling into the cup on its last rotation.
Japan's Hataoka was the first in the clubhouse on 13-under, firing four birdies and one bogey in her three-under par 68.
At six months pregnant, the 38-year-old pro golfer, model and TV personality finished in sixth with 129 points on the modified Stableford system.
When the players returned on Monday it was more of the same as Hataoka relied on her short game to get up-and-down for par and Lopez two-putted to equal. "When the tournaments start to get harder and harder, it will be a good lesson for me". She dropped to 3-5 in her LPGA career in playoffs. "My first win was in the lead".
Both players secured pars on the sixth playoff hole, sending it back to the tee.
Mexico's Lopez capped her final round with the only birdie of the weekend at 18, the last of five birdies in her five-under 66 for 13-under 271.
Second-seeded Karolina Pliskova clinched a 6-1, 7-5 win with a late service break against Kristina Mladenovic.
The victory qualifies Lopez for the 2021 Tournament of Champions.
When Golf Channel's Jerry Foltz asked Lopez if she was glad she didn't have to see Tranquilo's 18th hole for another 52 weeks, she smiled and said no. "I like it. It was a flawless number for me yesterday, to be honest".