Performances of the week

Iwanaga improves Japanese number one status

Anna Iwanaga improves her status as Japanese number one after coming through a playoff to win the IMG Academy Junior World Championship. Iwanaga and Australian Amelia Harris finished all-square on 6-under-par 210 at Torrey Pines in San Diego, California, with Iwanaga settling things at the first extra hole. It is her fourth victory of the year and sees her move six places to 33rd on this week’s World Amateur Golf Ranking®. Harris’s consolation is a 43-ranking rise to 256th.

Singapore success sees Prachnakorn join top 80

Prim Prachnakorn progresses 14 positions to 76th with victory in the Singapore Open Amateur Championship at Orchid Country Club. The Thai player opened with rounds of 70 and 71 before carding a 64 and 66 to finish on 17-under-par 271 for a six-shot victory.

Hartwiger takes Senior Amateur on debut

Kathy Hartwiger of the United States is 238 places higher on the table at 637th thanks to winning the R&A Womens Senior Amateur Championship on her championship debut. The 59 year old ran out a three-shot winner at Walton Heath thanks to a 1-over-par 297 total following rounds of 76, 73, 70 and 78.

Top 20 movers

Lauren Kim of Canada and Thailand’s Suvichaya Vinijchaitham join this week’s top 20. Kim climbs three places to 18th, while Vinijchaitham is two spots better off in 20th position.

Top 50 movers

Avery Weed (USA), Vanessa Borovilos (CAN) and Beth Coulter (IRE) graduate to the top half century. Weed makes a five-ranking rise to 47th; Borovilos moves two notches up the table to 49th; while Coulter climbs four spots to 50th.

Biggest ranking improvement

Irish player Kate Brody’s fourth place finish in the Michigan Women's Amateur Championship, her fourth top 10 of the year, takes her 1,154 rankings to 1,336th.