South African Wesley Moodie has reached the second round of the Legg Mason Tennis Classic in Washington.

Moodie, ranked 86th in the world, needed four match points Monday to beat American Sam Querrey, 2-6, 7-6, 7-6. Moodie never managed a service break while Querrey fired 19 aces. But Moodie won 10-percent more of his first-serve points to claim just his fifth win this year. Moodie next faces French sixth-seed Sebastien Grosjean.

Kenneth Carlsen of Denmark advanced past Danai Udomchoke, 6-1, 6-2. Carlsen will face another Thai opponent, 43rd-ranked Paradorn Srichaphan, in the second round.

American Kevin Kim ousted compatriot Scott Oudsema, 6-1, 6-3. Kim next plays top-seeded American James Blake, who was the runner-up last year to compatriot Andy Roddick.