How long is the usable life of a tennis ball?
As a tennis enthusiast, I've found that the usable life of a tennis ball greatly depends on how often and intensely it's used. If you're playing casual games a few times a week, a ball can last one to two months. However, in professional matches, they're typically replaced every nine games. So, if you're a serious player, expect to replace your balls more frequently. Keep in mind that factors like court surface and weather conditions can also impact a ball's longevity.
