The former No. 1 broke once in the second set and twice in the decider to reach the third round.The 17-time major champion is a four-time winner in Hamburg, the city where he won his first title in 2002 to break into the top 10.After losing at Wimbledon to Sergiy Stakhovsky - who failed to qualify for the main draw in Hamburg - Federer dropped to No. 5 in the rankings, the first time in a decade t