NAPLES, Fla. -- New Zealand teenager Lydia Ko ended a big year on the LPGA Tour with the largest payoff in women's golf.

Ko won the $1 million bonus from the "Race to CME Globe" on Sunday even before she began a three-way playoff. The 17-year-old added $500,000 when she defeated Carlota Ciganda of Spain on the fourth extra hole at Tiburon Golf Club.

Ciganda missed a 3-foot birdie putt on the 17th hole in regulation that would have given her the lead. She missed a 5-foot birdie putt on No. 18 on the third playoff hole. On her next try, she pulled her approach into a hazard and made bogey.

Ko played the 18th hole five times on Sunday and made par each time. The last par was worth $1.5 million.