Richard Mullen riding North America, right, to victory in the Al Maktoum Challenge at Meydan. Tom Dulat / Getty Images
Richard Mullen riding North America, right, to victory in the Al Maktoum Challenge at Meydan. Tom Dulat / Getty Images
North America and Yulong Warrior book Dubai World Cup places after Super Saturday success at Meydan
Richard Mullen rode both Satish Seemar-trained horses to victory in Dubai
