I remember from Sports Illustrated that Dave Cowens, then center for the Boston Celtics, belonged to some organization that swapped odd-sized shoes. Given that

I remember from Sports Illustrated that Dave Cowens, then center for the Boston Celtics, belonged to some organization that swapped odd-sized shoes. Given that NBA centers tend to have unusually large feet, one might have thought it unlikely that he could have found someone else with unusually large feet, but disproportioned symmetrically. Yet apparently he did.