The system of the Rolex Grand Slam is simple: Anyone, who wins three shows in a row, receives 1 million Euros on top of the prize-money of each show. If that same rider then continues their success by winning a fourth Major in succession, they will be rewarded with an additional 1 million Euro bonus. Moreover, anyone who wins two out of the four shows in his cycle, also receives a bonus (250’000 euros).
It is possible to claim the bonus riding different horses. This system is infinite, it is not limited to a calendar year. It is a never ending story.