From the Nationals: "Dave Matthews Band announced today they will perform at Nationals Park - the home of the Washington Nationals -- on Friday, July 23 with Zac Brown Band as support. This will be the ballpark's second-ever show, following Elton John and Billy Joel's sold-out show in July 2009. Tickets and parking will go on sale to the general public on Friday, February 26 at 10:00 a.m. online at www.tickets.com
and by phone at 888-632-6287. The show will be held rain or shine and will be promoted by Live Nation."