United States coach Gregg Berhalter is king of the trainers.
Berhalter, the 49-year-old former American international from New Jersey, has such an extensive collection of training shoes that debates about his choice of footwear rage for days every time his team take to the field.
He made a huge impact when the USA drew 1-1 with Wales in their opening group game on Monday night by opting for a pair of Nike A Maniere x Air Jordan 4 that are yet to be released.