New Zealander Lydia Ko's incredible run of form has continued, adding the AIG Women's Open to her two existing major championships overnight at St Andrews.

Just two weeks ago, Ko was on cloud nine after her Gold Medal-winning performance at the Paris Olympic Games, and admitted she thought things could not get much better.

"It's been a crazy past few weeks. You know, something that was too good to be true happened, and I honestly didn't think it could be any better and here I am as the AIG Women's Open Champion," she said.

"Being here at the Old Course at St Andrews, it makes it so much more special.”

Standing on the 16th tee, Ko faced a two-shot deficit, and as her tee shot found the left rough, the New Zealander was just trying to hold on.

"I was in the rough and got a little bit of a flyer, so I ended up being in the fescue past the green, and I just didn't want to make two consecutive bogeys coming down the stretch," she said.

"No matter if I was fifth or leading, I think the position didn't matter. It's just I didn't want to end my championship that way."

Ko was able to scramble for a clutch par, followed by another par at the famed - and difficult - 17th, before finishing her championship in style.

"Just before I hit my second shot on 18, I realised that I was tied for the lead, and I knew I kind of felt like the girls coming in would also birdie the 18th," she said.

"I wanted to make sure that I birdied and just give myself a chance at it, no matter if I go in a playoff or end up not winning, that was kind of beside the fact there.

"I kind of accomplished and did all the small goals, and I think that made me a little bit more focused on what was right in front of me instead of thinking ‘oh, am I going to win or not’."

That final birdie proved more than enough to win as she eventually ended as a two-shot victor at 7-under, with four players tied for second. 

Grace Kim finished as the leading Australian in a share of 37th while Steph Kyriacou endured a tough final day to slip to a tie for 60th.

Elsewhere, Adam Scott returns to the PGA TOUR’s Tour Championship for the 10th time in his career after falling just short of victory at the BMW Championship in Colorado.

“I’m disappointed not to have won today, but I’m pretty happy to be going to East Lake because that wasn’t on the cards a couple weeks ago,” said Scott, who also locked up his spot as one of six automatic qualifiers for the International team to contest the Presidents Cup next month.

Cam Davis closed out his season with a round of 66 and a tie for fifth, climbing from 49th to 36th in the FedEx Cup standings.

Entering the week inside the top 30 of the FedEx Cup, Jason Day’s tie for 33rd in Colorado saw him drop from 25th to 33rd to miss the season finale.

A strong weekend showing saw David Micheluzzi record his third top-10 DP World Tour finish in his past five starts at the Danish Golf Championship while Steve Allan’s hopes of a maiden PGA TOUR Champions title were cruelled when his tee shot at the par-4 14th could not be found and he made double bogey.

A tie for 24th in the first event of the Korn Ferry Tour Finals has Karl Vilips 17th on the points list with three events remaining, the top 30 after the Tour Championship to earn status on the PGA TOUR in 2025.

Jess Whitting was one of six Aussies to advance from LPGA Pre-Qualifying to Stage 1 of Q-Series.

Final results

PGA TOUR

BMW Championship

Castle Pines Golf Club, Colorado, USA

1          Keegan Bradley            66-68-70-72—276       $US3.6m

T2        Adam Scott                  68-63-74-72—277       $1.503m

T5        Cam Davis                   72-70-72-66—280       $728,750

T33      Jason Day                    78-69-71-71—289       $119,667       

LPGA Tour/Ladies European Tour

AIG Women’s Open

St Andrews Old Course, St Andrews, Scotland

1          Lydia Ko (NZ)                71-70-71-69—281       $US1.425m

T37      Grace Kim                    77-71-73-71—292       $45,568

T60      Stephanie Kyriacou      76-68-72-79—295       $19,105

MC       Hannah Green              77-74—151

MC       Minjee Lee                   78-75—153

MC       Hira Naveed                 80-76—156

MC       Gabriela Ruffels           81-76—157

MC       Karrie Webb                 82-77—159

DP World Tour

Danish Golf Championship

Lübker Golf Resort, Aarhus, Denmark

1          Frederic Lacroix            67-71-67-65—270       €381,991.28

T10      David Micheluzzi          71-70-67-69—277       €43,816.65

T27      Jason Scrivener            71-71-67-71—280       €19,661.32

T42      Sam Jones (NZ)            67-73-66-76—282       €11,684.44

MC       Haydn Barron               72-76—148

MC       Andrew Martin             76-75—151

PGA Tour Champions

The Ally Challenge

Warwick Hills Golf and Country Club, Michigan, USA

1          Stewart Cink                 67-66-66—199 $US330,000

T5        Steve Allan                   70-66-71—207 $80,960

T10      Rod Pampling              67-70-71—208 $45,886

T17      Mark Hensby               73-66-70—209 $34,100

T19      Greg Chalmers             68-72-70—210 $26,023

T26      Richard Green              70-72-69—211 $17,527

T38      Cameron Percy             69-73-71—213 $11,220

T38      David Bransdon           72-68-73—213 $11,220

T52      Michael Wright            73-70-73—216 $5,573

T55      John Senden                77-73-67—217 $4,840

Korn Ferry Tour

Albertsons Boise Open presented by Chevron

Hillcrest Country Club, Idaho, USA

1          Matt McCarty               63-64-67-69—263       $US270,000

T24      Karl Vilips                     67-67-67-70—271       $12,620

MC       Brett Drewitt                69-71—140

MC       Rhein Gibson               72-69—141

PGA Tour Americas

CentrePort Canada Rail Park Manitoba Open

Southwood golf and Country Club, Canada

1          John Keefer                  63-61-71-67—262       $US40,500

MC       Grant Booth                 72-66—138

MC       Harry Hillier (NZ)          69-70—139

MC       Charlie Hillier (NZ)        71-73—144

Challenge Tour

Indoor Golf Group Challenge

Landeryds Golfklubb – Vesterby Links, Vesterby, Sweden

1          Joakim Lagergren         68-70-66-68—272       €43,200

T37      Connor McKInney        70-70-72-71—283       €1,674

MC       Hayden Hopewell        70-75—145

MC       Blake Windred             74-72—146

LET Access Series

Ladies Slovak Golf Open

TALE Ski Golf & Hotel Resort, Slovakia

1          Tina Mazarino              70-70-70—210 €7,200

T2        Wenyung Keh (NZ)       66-72-75—213 €4,072.50

T47      Kristalle Blum               76-76-79—231 €321.75

MC       Munchin Keh (NZ)        74-83—157

MC       Stephanie Bunque        76-84—160

Japan Golf Tour

Sansan KBC Augusta

Keya Golf Club, Fukuoka

1          Jinichiro Kozuma          68-66-66-69—269       ¥20m

Won on the second hole of sudden-death playoff

T20      Michael Hendry           67-76-69-67—279       ¥1.18m

MC       Brad Kennedy              72-75—147

MC       Anthony Quayle           73-76—149

LPGA Q-Series

Pre-Qualifying Stage

Top-95 and ties advance to LPGA Q-Series Qualifying

1          Ashley Menne (a)         69-66-69-68—272

T8        Jess Whitting               67-73-68-70—278

T22      Kelsey Bennett             70-70-71-71—282

T49      Jennifer Herbst            69-76-73-67—285

T49      Lion Higo (a)                78-66-69-72—285

T60      Claire Shin (NZ)            69-73-75-69—286

T60      Sarah Yamaki Branch    70-73-71-72—286

T80      Caitlin Peirce (a)           72-71-74-71—288

MC       Grace Williams (a)        73-77-70—220

MC       Jordan O’Brien             71-76-73—220

MC       Justice Bosio (a)            72-72-78—222

MC       Amy Chu                      81-75-72—228

MC       Linley Ooi                    73-81-79—233

MC       Makensie Toole (a)       82-76-77—235