Sunline: The Mare Who Beat the Boys Twice at Moonee Valley

Some horses win races. Sunline changed the way people thought about what a mare could do against the very best male horses in the country. The video above revisits her back-to-back victories in the Cox Plate — Australian racing's self-styled "weight-for-age championship of the world" — and it's worth understanding why those two wins, in 1999 and 2000, still get talked about a quarter of a century later.

A mare built for the big stage

Sunline arrived in Australia from New Zealand and, under the training of father-and-son team Trevor and Stephen McKee, developed into one of the toughest and most durable Group 1 performers Australasian racing has produced. Across a career that ran from the late 1990s into the early 2000s, she racked up 32 wins from 48 starts and 27 stakes victories, and for a period was recognised as the world's highest-earning racemare. As the video lays out, none of that happened by accident — she was a genuine weight-for-age operator, meaning she wasn't just beating other mares in restricted company, she was taking on entire fields of open-class colts and geldings carrying set weights rather than handicap allowances. That distinction matters: weight-for-age racing is widely regarded as the truest test of ability in the sport, because it strips away the handicapper's attempts to level the field.

Two Cox Plates, two different tests

The video's core story is Sunline's back-to-back Cox Plate wins at Moonee Valley. In 1999 she got past a high-quality field that included Tie the Knot to claim her first. In 2000 she returned and delivered arguably the more memorable performance, powering away on a wet track to beat that year's Caulfield Cup winner, Diatribe, by a big margin — the kind of demolition job that turns a good horse into a champion in the public imagination. Sky Heights was a constant thorn in both those runnings, finishing third behind her on each occasion, which only added to the sense that Sunline was measuring herself against genuine quality, not lesser opposition. She went back for a third Cox Plate in 2001 but was beaten by another West Australian-trained star, Northerly, a rivalry that added extra texture to her final campaigns.

Why it still matters to punters

This kind of footage isn't really about a betting angle — it's a history lesson, and a genuinely useful one. Understanding weight-for-age form, and how rare it is for a mare to dominate open company across multiple prepared campaigns, helps explain why animals like Sunline (and later Winx, who ran her own remarkable Cox Plate streak) get treated differently by markets and by punters than a typical handicap winner. Recognising genuine class is a skill that's built by watching exactly this sort of vision, not by chasing a single result. Racing and wagering carry real risk regardless of a horse's reputation, so treat stories like Sunline's as context for understanding the sport, not as a shortcut to picking winners — form study, bankroll discipline and realistic expectations still matter far more than nostalgia ever will.