Who's keeping score? This patented Tennis Score Tube is keeping score. This PVC tube with holes indicates set score, fitting over a round tennis post, attaching to the net, or linked to a fence. A stainless steel clamp is furnished to secure to post or net; hooks are supplied for fence mounting. Players choose an old tennis ball to designate the score. For school or neighborhood courts, this clever Tennis Score Tube gets the job done well, without the need for batteries or a plug-in! Patented tennis score keeper fits over a round tennis post, attaches to net, or secures to fence.  A stainless steel clamp is furnished to secure to post or net.  Hooks are supplied for fence mounting.  Players use an old tennis ball to keep the score.