A brand-new startup app and a 10-year-old mobile ad platform took home the top prizes at the ’15 Momentum Sports Marketing Symposium’s inaugural fan engagement pitch Thursday. Dallas-based Fan Media Network narrowly won the judges’ prize. On the app, fans can upload their own video reports about their favorite teams, then compete with others for votes to become the site’s official team correspondent. Bruin Sports Capital Exec VP David Abrutyn, a judge for the event, gave Founder CEO Kirk Berridge high marks for its disruption potential. “We really came here to present the company to the industry,” Berridge said. “Nobody really knows about Fan Media Network other than our partners, Ticketmaster, Fanatics, Uber, Dallas Mavericks, (and the) NBA, so what better place to do it at? … It’s going to attract partners, sponsors, broadcast media companies, teams, leagues that know about us now.”…