The greatest equestrian of the 20th century makes a stunning comeback in the 21st century. This is what Mark Todd has achieved - winning at Badminton in 2011 and being a favourite to win a third Olympic gold medal. Mark Todd retired from eventing in 2000, after the Sydney Olympics, to take up a career as a racehorse trainer and breeder in his native New Zealand. He had a great deal of success but always hankered after competing at the highest level. He set his sights on riding at the 2008 Olympics - he achieved this, jumping a double clear. Based in the UK, Mark has a string of high-class event horses which he competes from March to October.