Germany's Isabell Werth won the International Equestrian Federation Dressage World Cup Grand Prix on the opening day of The Dutch Masters in 's-Hertogenbosch ©Getty Images

Germany's Isabell Werth won the International Equestrian Federation Dressage World Cup Grand Prix on the opening day of The Dutch Masters in 's-Hertogenbosch.

Werth, riding horse Emilio, scored 77.196 per cent to claim victory.

Denmark's Daniel Bachmann Andersen finished second on Blue Hors Zack, managing 76.109 per cent.

Completing the top three was Germany's Benjamin Werndl, who registered 75.739 per cent on Daily Mirror.

Compatriot Helen Langehanenberg came fourth, while The Netherlands' Hans Peter Minderhoud and Ireland's Judy Reynolds ranked fifth and sixth respectively.

Action in 's-Hertogenbosch is due to continue tomorrow.

The event will conclude with the Rolex Grand Prix on Sunday (March 17).

It forms part of the Rolex Grand Slam of Show Jumping, considered by the sport to be the ultimate equestrian challenge.