| Calendar prize money | $5,886,879 |
|---|---|
| Singles | |
| Season record | 66–15 |
| Calendar titles | 4 |
| Year-end ranking | #2 |
| Ranking change from previous year |  1 |
| Grand Slam & significant results | |
| Australian Open | SF |
| French Open | F |
| Wimbledon | F |
| US Open | W |
| Other tournaments | |
| Tour Finals | RR |
| Olympic Games | QF |
| Doubles | |
| Olympic Games |  Gold Medal |
| Davis Cup | |
| Davis Cup | WG PO (adv. to 2009 WG) |
← 2007 2009 → | |
Roger Federer won one major in 2008, the US Open, defeating Briton Andy Murray, 6–2, 7–5, 6–2. Federer was defeated by Rafael Nadal in two Grand Slam finals: at the French Open, which he lost 1–6, 3–6, 0–6, and at Wimbledon in a famous five-setter, 4–6, 4–6, 7–6, 7–6, 7–9, when he was aiming for six straight wins to break Björn Borg's record. At the Australian Open, Federer lost in the semifinals to Novak Djokovic, ending his record streak of 10 consecutive Major finals. Roger Federer lost twice in Master Series 1000 Finals on clay to Nadal at Monte Carlo and Hamburg. However, Federer was able to capture three more victories in 250-level events at Estoril, Halle, and Basel.
In doubles, Federer and compatriot Stanislas Wawrinka won the gold medal at the 2008 Summer Olympics.