2010 Legg Mason Tennis Classic

The 2010 Legg Mason Tennis Classic was a tennis tournament played on outdoor hard courts. It was the 42nd edition of this event and was part of the ATP World Tour 500 series of the 2010 ATP World Tour. It took place at the William H.G. FitzGerald Tennis Center in Washington, D.C., USA, from August 1 through August 8, 2010. Unseeded David Nalbandian, who entered the main draw on a wildcard, won the singles title.

ATP entrants
List of Association of Tennis Professionals (ATP) singles entrants, as of July 26, 2010.

Other entrants
The following players received wildcards into the singles main draw
 * 🇺🇸 James Blake
 * 🇦🇷 David Nalbandian
 * 🇪🇸 Fernando Verdasco
 * 🇫🇷 Richard Gasquet

The following players received entry from the qualifying draw:
 * 🇦🇷 Brian Dabul
 * 🇺🇸 Kevin Kim
 * 🇷🇺 Igor Kunitsyn
 * 🇯🇵 Kei Nishikori
 * 🇺🇸 Ryan Sweeting
 * Grega Žemlja

Singles
🇦🇷 David Nalbandian defeated 🇨🇾 Marcos Baghdatis, 6–2, 7–6(7–4)
 * It was Nalbandian's first title of the year and 11th of his career.

Doubles
🇺🇸 Mardy Fish / Mark Knowles defeated 🇨🇿 Tomáš Berdych / 🇨🇿 Radek Štěpánek, 4–6, 7–6(9–7), [10–7]