To date, Rolex Testimonee Scott Brash from Scotland is the only competitor to achieve the feat, having done so across 2014 and 2015.
Launched in 2013, the Rolex Grand Slam of Show Jumping was initially comprised of the Majors in Aachen, Calgary and Geneva. In 2018, The Dutch Masters was added to the Grand Slam, which now consists of two outdoor competitions, the CHIO Aachen and the CSIO Spruce Meadows ‘Masters’, and two indoor, the CHI Geneva and The Dutch Masters.