tragic bombinge at the finish of the boston marathon. businesses can be essential to the communities in which they work. finally, we asked each of our contributors to predict a precht trend in sports business in the year ahead. for seth abraham, it is continued debate over performance-enhancing drugs. some consumers are taking advantage of mobile platforms to customize their sports experience. we also sees sponsors names on jerseys. i think 2014 will be the year that the business model college sports changes forever. pay for play, i doubt it. i predict that the power will continue to shift away from the ncaa. it will be interesting to see how it all plays out. our thanks to all of our contributors and all who participated in this week show. keep an eye on bloomberg.com during the winter holidays for more bloomberg sports business "overage and more "sportfolio coverage. i'm record of -- rick horrow. thanks for watching. ♪ .