Here's how stars like Taylor Swift and Travis Kelce, Ben Stiller and other VIPs are treated at the U.S. Open. (Illustration: Jiaqi Wang for Yahoo News)There's Ben Stiller, front row for the Taylor Fritz-Novak Djokovic match, watching every point with intent. Beside him, Owen Wilson. A few seats down? Elizabeth Banks. And that's just a sampling from one night session at the U.S. Open, America's largest and loudest professional tennis tournament. Some of the biggest names haven't even touched down in Queens, N.Y., yet - but as the tournament stakes get higher, so does the celebrity wattage.