The weekend’s best in nightlife, music and art. For even more, check out Nightlife Agenda.

(Photo by Doug Kapustin/For The Washington Post)

Saturday: Billy Joel played National Park's first concert, a co-headlining show with Elton John in 2009, and he returns Saturday for a solo show. Expect to sing along with your favorite songs -- and a few rarities -- at the 8 p.m. performance. Tickets are $49.50-$124.50; get them here.

Saturday-Aug. 3: For tennis fans, the Citi Open Tennis Tournament is nine days of bliss with internationally ranked players converging on Rock Creek Park's William H.G. FitzGerald Tennis Center. Since its inception in the late 1960s, the tournament has been won by the likes of Andy Roddick, Juan Martin del Potro and Andre Agassi. And although the tournament's name may have changed (it was long known as the Legg Mason Tennis Classic), the caliber of players hasn't, with Wimbledon semifinalist Milos Raonic, world No. 5 Tomas Berdych and the world's highest-ranked American, No. 12 John Isner, competing on the men's side; on the women's side, world No. 7 Eugenie Bouchard and 21-year-old American Sloane Stephens are scheduled to play. Single sessions are $25-$75.

Saturday: It's the first weekend of business for Dupont Circle's new German-style bar and beer garden, Sauf Haus. The bar opens Thursday, but give it a few days to settle in, and make plans to meet 20 of your friends on the 2,000-square-foot rooftop Saturday. Read more: Nine things to know about Sauf Haus, Dupont's new rooftop beer garden.

Saturday: All the beers you know and love, from Heavy Seas to Schlafly to Flying Dog, are set to spill at this weekend's beer-a-palooza Midatlantic Brewsic Festival, which descends on Anne Arundel Fairgrounds near Annapolis on Saturday. (The "Brewsic"? That's a nod to the many tribute bands, from a Jimi Hendrix tribute to a Journey tribute, slated to play the fest.) The $20 ticket includes four samples.

Through Aug.11: If the sight of pads, helmets and tackling dummies means anything, it's that football season is just around the corner. Before the Washington Redskins season opener against the Houston Texans on Sept. 7, you can catch the team their open training camp this week at Richmond's Washington Redskins Training Center, where we'll have the appearance of actual football -- a welcome sight indeed. Plan a little roadtrip to Washington Redskins Training Camp. Sessions are open to the public, though some require free tickets. Register at

Saturday: Rock Creek Social Club's Grilled Cheese Social hits Marvin's rooftop deck with real-deal grilled cheese, plus $4 rail drinks, $5 beers and the sultry summer sounds of the Rock Creek DJs and you've got some perfect cookout vibes. There's no cover charge, and the party runs from 1 to 8 p.m.

Saturday: Learn a few new dance moves at the Kennedy Center when National Dance Day returns to the Millennium Stage -- actress Jenna Elfman (late of TV's "Dharma and Greg") is joined by hip-hop dancer Fik-Shun and Axis Dance Company to lead crowds in a free evening of dance. The free event kicks off at 5 p.m.; you can get a head start on learning the dance moves here.

Through Sunday: It came, it brought all kinds of theatrical weirdness and wonders, and now, the Capital Fringe Festival is in its final days. You've got till Sunday to make use of your Fringe button and see such shows as "The Balloon Plays" and "Interrogation." Get up to speed: Secrets to Capital Fringe Festival success: Keep the liquor handy.

Sunday: The return of Chain and the Gang, the band fronted by D.C. punk icon/enigmatic man about town Ian Svenonius, to the Black Cat this weekend should feels like a kind of homecoming dance for fans of the local punk scene. Get there early for opener Ed Schrader's Music Beat, one of Baltimore's latest up-and-comers.  Read more: "How the Sassiest Boy in America became the most interesting man in rock-and-roll."