Philipp Petzschner lifted Germany into the Davis Cup quarterfinals Sunday, defeating Croatia's Ivo Karlovic 6-4, 7-6 (3), 7-6 (5) in the decisive match of their first-round series. Karlovic set the record for the world's fastest serve during the doubles match on Saturday, but couldn't hold on to his serve in the opening game of the first set, and then during the two tiebreakers. More...