Roger Federer on his 250-plus sneaker collection: 'I think obsession can definitely lead to some good things'

Tennis legend Roger Federer may be a 20-time Grand Slam tennis champ, but his most recent deal speaks to another passion of his off the court: sneakers (he has over 250 pairs). During an event for his new deal with Swiss shoemaker On, Federer talked about how important it is for the younger generation to have an obsession.