Federer then squandered two game points before serving his second ace for the game to force a tiebreak, with the match ticking past three hours. (IBM Corp., Tennis Australia)

The second-seeded del Potro slammed down five of his 19 aces in the tie breaker, including an authoritative ace down the middle to earn his fourth championship point, then fired a forehand winner to end a high-quality 3-6, 7-5, 7-6(6) victory over Roddick and successfully defend his Washington DC championship. (Tennis Week)

Nadal finds a stunning forehand into the corner to earn two break points. Federer responds with an ace before forcing an error to snuff out both. (365 Media Group plc)