The 2008 US Open was a tennis tournament played on outdoor hard courts. It was the 128th edition of the US Open, and the fourth and final Grand Slam event of the year. It took place at the USTA Billie Jean King National Tennis Center in Flushing Meadows, New York City, United States, from August 25 through September 8, 2008.

Roger Federer is a Swiss former professional tennis player. Federer was ranked world No. 1 in singles by the Association of Tennis Professionals (ATP) for 310 weeks, including a record 237 consecutive weeks, and finished as the year-end No. 1 five times. He won 103 singles titles on the ATP Tour, the second most of all time, including 20 major men's singles titles and six year-end championships.