Some good matches tonight in Washington. David Nalbandian, who caught fire a year ago at this time, opens his title defense against James Blake in the marquee match.
American teen Ryan Harrison opens in about 30 minutes against Mischa Zverev. The 19-year-old Harrison just reached back-to-back semifinals in Atlanta and LA.
John Isner is also on tonight against Tobias Kampke and in a match between two former Top 5 players on the mend, Tommy Haas battles Fernando Gonzalez.
Top seed Gael Monfils will play tomorrow against the winner of Tuesday Alex Bogomolov-Ryan Sweeting affair.
After an Atlanta title and LA final, second-seeded Mardy Fish withdrew yesterday from the tournament with a bruised right heel. Fish was replaced in the draw by lucky loser Wayne Odesnik who received a bye.
Former champion Andy Roddick withdrew from the field last week because of an abdominal injury.
STADIUM start 4:00 pm
[WC] R Harrison (USA) vs M Zverev (GER)
Not Before 5:00 PM
T Haas (GER) vs F Gonzalez (CHI)
Not Before 7:00 PM
J Blake (USA) vs  D Nalbandian (ARG)
 J Isner (USA) vs T Kamke (GER)
GRANDSTAND start 4:00 pm
R Sweeting (USA) vs A Bogomolov Jr. (USA)
[Q] T Smyczek (USA) vs G Dimitrov (BUL)
 J Nieminen (FIN) vs I Kunitsyn (RUS)
 M Llodra (FRA) / N Zimonjic (SRB) vs K Anderson (RSA) / P Hanley (AUS)
Also Check Out:
Roddick, Isner Highlight Tuesday in Washington; Blake Bounced
Monfils, Fish Headline ATP Washington; Kitzbuhel; WTA Carlsbad Previews
Blake Bests Harrison For First Win Of Season; Roddick v. Mahut Today In Atlanta
Isner Battles Blake in DC; Americans on the Move
Del Potro Wins Two, Sets Up Anderson Clash Tonight In Washington; Dimitrov Duels Haas, Raonic Crashes Out