DRINKS, DJs, DESIGN: Get down with free drinks, music and art for a good cause during the Green Carpet Affair at Eastern Market on 225 7th St. S.E.). Go for free Lagunitas beer, organic eats, and art installations from Jay Coleman. DJ Dub El and the GRAMMY-nomimated Christylez Bacon will perform. The event benefits nonprofit D.C. Greenworks. 6-9:30 p.m.; suggested donation $12.
MIX IT UP: Everyone needs a little Hasidic reggae in their lives, right? Matisyahu is headed to the 9:30 Club (815 V St. N.W.), and psychedelic band Moon Taxi opens. Get there early for a truly eclectic mix of music. 7 p.m.; $35.
SANS STRAS: Can the Nats beat the Chicago Cubs without their star pitcher? Stephen Strasburg injured his arm in a previous game, and his future is uncertain for the rest of the season. The team will need all the support they can get tonight at Nats Park (1500 S. Capitol St. S.E.). 7:05 p.m.; $5 and up.
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