ROGER Federer was true to his word, shrugging off Andy Murray's ambitious challenge last night to enhance a staggering grand slam record with a glorious Australian Open victory. Federer's imperious 6-3 6-4 7-6 (13-11) defeat of Murray brought his 16th major title. But he was made to sweat through a dramatic third-set tiebreak, which saw Murray hold five set points and Federer three match points before the contest ended dramatically after 161 minutes. "I'm over the moon," Federer said. "I've played some of the best tennis of my life. This is a special moment in my life. It's also very...