I hear something moving inside my tennis racquet. Is it broken?
This article discusses the potential causes of strange sounds coming from a tennis racquet. It could be one of several things, such as a loose grommet, a loose string, a crack in the frame, or a loose screw. In order to determine the cause of the sound, the article recommends taking the racquet to a sports shop and having them inspect it. If the sound is coming from the strings, it may be possible to fix the racquet without replacing the strings. Finally, the article suggests avoiding hitting the racquet too hard, as this could cause it to break.