WATCH: Scott Brash on building the perfect relationship with Hello Sanctos

Sky Sports will once again broadcast live coverage of all three events that make up the Rolex Grand Slam, starting on Sunday with the Rolex Grand Prix in Aachen.

Live coverage starts at 12 noon on Sky Sports 5 HD, with highlights at 8pm on Sky Sports and also available On Demand.

After victory in Geneva in December, the world number one showjumper Scott Brash and his top horse Hello Sanctos are looking to make history on Sunday.

Brash hopes to become the first-ever rider to win two of the Grand Slam events in a row and go on to complete the famous treble in Calgary in September to net the one millon Euros bonus.

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Keep up to date with the latest interviews and news from Aachen on Twitter via @SkySportsHorses and http://www1.skysports.com/more-sports/equestrian.

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