Mark "TNT" Tucker (3-0, 3KOs), a light heavyweight prospect who made his pro debut in February, has signed a four-year deal with top manager Cameron Dunkin, and appears to be another talent coming to the promotional banner of Top Rank. Dunkin was named the manager of the year for 2007 by the Boxing Writers Association of America and currently represents several top fighters including Kelly Pavlik and Nonito Donaire. [details]