Kim Douglass reports the latest tennis news. American player Andy Roddick defeats Marinko Matosevic to continue on his journey to a repeat victory at the Brisbane International. Meanwhile, Maria Sharapova announces today that she has officially signed with Head racquets. Over the weekend Rafael Nadal and Roger Federer battled it out on the high seas of Doha, playing an exhibition match together before reaching the finals of the Mubadala World Tennis Championship.
