New Zealand's Jonelle Price has ended Oliver Townend's Grand Slam quest after her clear round in the show jumping to triumph at the Badminton Horse Trials.
Townend, Badminton winner in 2009, was seeking the £255,000 prize that goes to a rider who wins consecutive Burghley, Kentucky and Badminton titles.
With Burghley and Kentucky wins already secured, the British rider went clear on Cooley SRS to finish on 33.1 points.
But Price also went clear on Classic Moet and won with a score of 28.
Price, 37, who gave birth to son Otis in August, is the first woman to win the event since Australia's Lucinda Fredericks triumphed aboard Headley Britannia in 2007.
Price began yesterday's final day at the top of the standings after collecting just 0.4 time penalties in Saturday's cross country. Britain's Rosalind Canter and Allstar B had one down and finished third on 34.3.
Townend also took fifth place with his second ride, Ballaghmor Class, as 11 British pairs finished in the top 20.
Pippa Funnell in 2003 and Michael Jung in 2016 remain the only winners of the Grand Slam.