@cbsnewyork: In the middle of a point during Monday night's match between Naomi Osaka and Anastasia Zakharova, voices echoed throughout a quiet Arthur Ashe Stadium as some attendees shot a video on their phone cameras, with the flash on. "They think they're at a baseball game or a football game, and it's different," said fan Jerry Kaufman, who was visiting from Florida. "These players are out there alone. It's not a team." Read more about the tennis fan etiquette debate at our link in bio.