This is not one of your typical basketball dribbling drills, but it is still a great drill because it works on multiple things at the same time. It works on ball handling, conditioning, and hand eye coordination. Even for non ball handlers like big men this is a good drill because it will help develop soft hands. It will also help develop quick hands and quick handles.
When you handle the basketball in a game you don't want to have to worry about dribbling because than you won't be able to see the floor and make the right play. This basketball drill will help you not have to focus on dribbling and keep your eyes up, because you will have to focus on tossing and catching the tennis ball every time. Basketball drills like this are also great because they keep the players interested and help to keep a fresh rotation of drills going.