This was taken at the US Open of a very sprightly chair umpire on one of the side courts. I love her laughing expression, not typical of an umpire, and the graphic shape she and the chair create.
The fun part of the US Open is it includes many matches and practice courts unlike other sporting events like football, baseball, and basketball. With large tennis events, you get to see different players, their entourages, and tournament officials. It’s also a great people-watching event attracting New York diversity and international people as well.
I’m not sure what the price is now but a grounds pass was $50, a good deal for what you can see.