Steve Guerdat will be competing at the CHIO Aachen 2014 with his Olympic gold horse Nino des Buissonnets. After his victory at the CHI in Geneva at the end of last year, the Swiss rider's personal Rolex Grand Slam of Show Jumping has begun. If he wins the Rolex Grand Prix in Aachen on July 20th, he will collect a bonus of 500,000 Euros.