Yes, the food at the US Open's restaurants and food courts is fine and tasty. You can find everything from fresh salads and burgers to cocktails and full-course dinners. The problem is the price. It kills me to spend $10 or more for a simple lunch at the food court. And the Open Club, Aces, and the Champions Bar & Grill are great choices if you've got the bucks to spend (call for reservations - 718-393-1933).
So here's my solution. Hit up Queens restaurants on the way to or from the Open. You want fine Italian dining? Try Il Toscano, a few LIRR stops from the Open. Or some of the best Indian and Colombian food in New York? Try Jackson Heights, a few hops down the #7 subway. Or Chinese, Thai, or Korean? Just one more stop on the #7 to downtown Flushing. Or Malaysian? Queens got it. See more dining options along the #7 International Express.