A capacity crowd is expected at the stadium on Saturday, but tickets remain for the show and can be purchased at tickets.com or by calling 888-632-6287.
Guests attending the first concert at the ballpark are encouraged to arrive early to avoid delays, transportation congestion and lines.
All gates will open at 6 p.m. ET, and the show will begin promptly at 7:30. Fans planning on driving to the concert may prepurchase their parking at nationals.com/waytogo.
Nationals Park is located on the Metrorail Green Line, at the Navy Yard Metro Station.
As they've been doing on the current tour, John and Joel will open the concert with a series of duets, playing twin pianos and trading vocals, and then they'll perform separately before teaming up once again for a fantastic finale.
Expect the set list to draw from a seemingly endless list of hit songs in the catalogs of both Rock and Roll Hall of Famers, such as John's "Your Song," "Rocket Man," "Saturday Night's Alright (For Fighting)," "Bennie and the Jets" and "Philadelphia Freedom," and Joel's "Movin' Out," "It's Still Rock and Roll to Me," "Only the Good Die Young," and, of course, "Piano Man."
John and Joel are not strangers when it comes to having concerts at baseball stadiums. John had a memorable concert at Dodger Stadium in the 1970s, and Joel played at Yankee Stadium not too long ago, as well as the last concert at Shea Stadium last summer.
"Did I ever assume I would play these big stadiums?" Joel said in an interview with MLB.com/Entertainment last year. "No. I had absolutely no idea. In a way, it's kind of ridiculous. Come on. Let's get serious, you know? I'm from Hicksville [Long Island]."
Not too long ago, John talked to MLB.com/Entertainment about his love for baseball.
"In a way, it's very poetic," John said. "I watched it and I fell in love with the game, and I learned how it worked, and I loved it.
"I watch baseball whenever I am on the road. ... For me, it's a huge relaxation and, like cricket, one of the most poetic things you can do is watch a game of baseball."