To continue the previous locked thread, stubhub is a reputable ticket dealer. They have a downtown location, but I don't think it's in Philips Arena. It's somewhere on Marietta St. They do charge a ridiculous fee for last minute pickup, though. In my opinion, your best bet is to get some seats directly from the Hawks (through ticketmaster) since there are still seats available. That way, your tickets will be at will-call or you can just print them out at home.