Groupon.com has some really good group deals in many major cities including DC. They have a daily "deal of the day" that has a limited time discount/quantity and occasionally you will find one for WTT or Legg Mason. To join and sign up for a free account, click here.
They are currently offering two dates - both I believe are shown live on ESPN each year (in case you want a chance to get on TV). I recommend the Saturday, August 7 ticket unless you can get the day off from work on Friday!:
- $20 for a reserved-seating day ticket for the quarterfinals (session seven) on Friday, August 6, at noon (a $40 value)
- $22 for a reserved-seating day ticket for the semifinals (session nine) on Saturday, August 7, at 1 p.m. (a $45 value)