The Olympic and world champion shot putter Valerie Adams is chasing her 50th consecutive win when she competes at the New York Diamond League on Sunday morning.
Adams last lost a competition in August 2010 and since then has had wins in 49 finals.
The only two athletes to have beaten Adams since August 2005 are both currently suspended for doping violations.
While her form this year has been moderate she is still well ahead of her opposition and is hoping to improve her own New York meeting record of 20.60 metres, set in 2012.
Adams' closest recent rival, Christina Schwanitz of Germany, who finished second to the four times world champion at the world indoor championships in March and at the Rome Diamond League, has chosen to bypass the New York meeting.
The biggest challenge is likely to come from Russian Yevgeniya who has a best this year of 19.33, compared to Adams' 20.67 metres.
The middle distance runner Nikki Hamblin will be the other New Zealander competing.
She's in the 3000 metres.