A seasoned senior American executive, John Duerden, who served as president and chief operating officer of Reebok International from 1990 until 1995, is taking the helm of Crocs on March 16, when he will replace Ron Snyder as president and CEO of the Colorado company. Snyder, who is retiring, will remain on Crocs’ board and assist Duerden with the transition. Most recently, Duerden led the Chrysallis Group, a consulting company he created in 2006 to focus on the development and renewal of brands and which invested in several technology-related ventures in the sporting goods industry. He was perhaps the only senior Reebok executive who was ever recruited by Nike, though he declined the offer. He was president and chief executive of Reebok from 1990-1995.