Played as the inaugural LPGA Mediheal Championship (April 16-29). Lydia Ko (NZ) beat Minjee Lee (Aus) with an eagle at the first playoff hole (par-5 18th), to record her 15th LPGA Tour title. [Lake Merced GC, San Francisco, CA].

Played as the ANA Inspiration (45th) (March 31-Apr 3). Second-placed Charley Hull (Eng) and In-gee Chun (S Kor) finished one shot behind Ko (NZ), who recorded back-to-back LPGA Tr wins. At 18 yrs 11 mths 9 days, Ko became the LPGA Tour's youngest ever two-time major champion, and youngest man or woman to win two majors since Young Tom Morris in 1869. [Dinah Shore Tournament course, Mission Hills CC, Rancho Mirage, CA].

Played as the Marathon Classic presented by Owens Corning & O-I (July 14-17). Lydia Ko (NZ) beat Mirim Lee (S Kor) and Ariya Jutanugarn (Thai) with a birdie at the fourth playoff hole (par-5 18th). [Highland Meadows GC, Sylvania, nr Toledo, OH].

Played as the Walmart NW Arkansas Championship presented by P&G (June 24-26). Second-placed Candie Kung (Taiw) and Morgan Pressel (USA) finished 3 shots behind Lydia Ko (NZ). [Pinnacle CC, Rogers, Arkansas].

Played as the Kia Classic (March 24-27). Second-placed Inbee Park (S Kor) finished 4 shots behind Lydia Ko (NZ). [Aviara GC, Carlsbad, CA].

Played as the ISPS Handa New Zealand Women's Open (Feb 12-14; ALPG/LET Tours event; LET season-opener). Second-placed Felicity Johnson (Eng), Nanna Koerstz Madsen (Den) and Hye-jin Choi (S Kor, amateur) finished 2 shots behind defending champion Lydia Ko (NZ), who won this event for the third time in four years. [Clearwater Resort, Christchurch, NZ].

Played as the Fubon LPGA Taiwan Championship (Oct 22-25; LPGA Tour event). Second-placed So Yeon Ryu (S Kor) and Eun-hee Ji (S Kor) finished 9 shots behind Lydia Ko (NZ). 18-year-old Ko recorded her tenth LPGA Tour victory, breaking Nancy Lopez's ten win record by almost 3.5 years. Ko's win returned her to the World No.1 spot. [Miramar G&CC, Taipei, Taiwan].

Ko (NZ) won the LPGA Tour season-long points chase, to capture her second straight Race to the CME Globe and $1 million bonus. Inbee Park (S Kor) was second with 5,700 pts; Lexi Thompson (USA) was third with 5,000 pts. The Globe is awarded based on points earned for "above the cut line" finishes during the LPGA Tour season.

Played as the Swinging Skirts LPGA Classic (April 23-26). Defending champion Lydia Ko (NZ) beat Morgan Pressel (USA) with a birdie at the second playoff hole. Ko celebrated her 18th birthday on the Friday of this event. [Lake Merced GC, San Francisco, CA].

Ko (NZ) won the LPGA Tour 2015 Money List, with season earnings of $2,800,802 on the Tour. Inbee Park (S Kor) was second with $2,630,011; Stacy Lewis (USA) was third with $1,893,423.

Played as the Canadian Pacific Women's Open (Aug 20-23). Lydia Ko (NZ) beat Stacy Lewis (USA) with a par at the first playoff hole (par-4 18th), to claim her third win in four years in this event. [The Vancouver GC, Coquitlam, nr Vancouver, BC].

The Evian Championship (22nd) (Sept 10-13). Second-placed Lexi Thompson (USA) finished 6 shots behind Ko (NZ). Aged 18 yrs 4 mths 20 days, Ko became the youngest ever women's major championship winner, a record previously held by Morgan Pressel (USA). [Evian Resort GC, Evian-les-Bains, France].

Played as the ISPS Handa Women's Australian Open (Feb 19-22; ALPG/LET/LPGA Trs event). Second-placed Amy Yang (S Kor) finished 2 shots behind 17-year-old Ko (NZ), who became the youngest ever winner of the Women's Australian Open. [Composite of East & West courses, Royal Melbourne GC, Victoria, Aus].

Played as the ISPS Handa New Zealand Women's Open (Feb 27-Mar 1; ALPG/LET Tours event). Second-placed Hannah Green (Aus, amateur) finished 4 shots behind Lydia Ko (NZ), who won this event for the second time in three years. [Clearwater Resort, Christchurch, NZ].

Ko (NZ) won the LPGA Rolex Player of the Year Award, based on a points system for top 10 finishes and performance in Majors. Inbee Park (S Kor) was second with 278 pts; Sei Young Kim (S Kor) was third with 161 pts.

Played as the Marathon Classic presented by Owens Corning & O-I (July 17-20). Second-placed So Yeon Ryu (S Kor) finished 1 shot behind 17-year-old Lydia Ko (NZ), who claimed her fourth LPGA Tour title. [Highland Meadows GC, Sylvania, nr Toledo, Ohio].

Played as the inaugural Swinging Skirts LPGA Classic (April 24-27). Second-placed Stacy Lewis (USA) finished 1 shot behind Lydia Ko (NZ), who recorded her third LPGA Tour win, in the week when she turned 17 years. [Lake Merced GC, San Francisco, CA].

Played as the CME Group Tour Championship (Nov 20-23; LPGA Tr season-ending event). Lydia Ko (NZ) beat Carlota Ciganda (Esp) with a par at the fourth playoff hole. Julieta Granada (Par) was eliminated with a bogey at the second playoff hole. [Gold course, Tiburón GC, Naples, FL].

Ko (NZ) won the inaugural LPGA Tour season-long points chase, to capture the Race to the CME Globe and $1 million bonus. Stacy Lewis (USA) was second with 5,650 pts; Michelle Wie (USA) was third with 5,100 pts. The Globe is awarded based on points earned for "above the cut line" finishes during the LPGA Tour season.

Ko (NZ) won the LPGA Tour 2014 Louise Suggs Rolex Rookie of the Year Award as the leading first-season player. Using a season-long points system (based on finishes in Tour events), Ko accumulated 1,720 pts; Mirim Lee (S Kor) was second with 941 pts. Ko finished third on the LPGA money list, with earnings of $2,089,033.

Played as the CN Canadian Women's Open (Aug 22-25). Second-placed Karine Icher (Fra) finished 5 shots behind defending champion Lydia Ko (NZ). 16-year old Ko became the first amateur to record two LPGA Tour wins, and first amateur to successfully defend a title on the Tour. [Royal Mayfair GC, Edmonton, Alberta].

Played as the ISPS Handa New Zealand Women's Open (Feb 8-10; ALPG/LET Tours event). Second-placed Amelia Lewis (USA) finished 1 shot behind Lydia Ko (NZ, amateur), who recorded her third win in a top professional women's event. At 15 yrs, 9 months and 17 days, Ko became the youngest ever winner on the Ladies European Tour. [Clearwater Resort, Christchurch, NZ].

Played as the CN Canadian Women's Open (Aug 23-26). At 15 yrs 4 mths & 2 days, Korean-born Lydia Ko (NZ, amateur), became the youngest ever winner on the LPGA Tour. The $300,000 first prize went to second-placed Inbee Park (S Kor), who finished 3 shots behind Ko. [The Vancouver GC, Coquitlam, nr Vancouver, BC].

Played as the Bing Lee Samsung Women's NSW Open (Jan 27-29; ALPG Tr event). Second-placed Becky Morgan (Wales) finished 4 shots behind Ko (NZ, amateur), who posted her first ALPG Tour win. [Oatlands GC, Oatlands, nr Sydney, NSW].

The US Women's Amateur Championship (112th). 15-year old Korean-born Ko (NZ), became the second youngest ever winner of the US Women's Amateur, beating Jaye Marie Green (USA) 3 and 1 in the final. [The Country Club, Pepper Pike, nr Cleveland, OH].