Like so. http://tt.tennis-warehouse.com/showthread.php?t=109489&highlight=tie+rubber+band
And...to the first poster on the thread, illegal?
http://editorial.gettyimages.com/source/search/FrameSet.aspx?s=ImagesSearchState%7c0%7c0%7c-1%7c28%7c0%7c0%7c0%7c1%7c%7c%7c0%7c0%7c0%7c0%7c0%7c0%7c0%7c0%7c7%7c%7candre+agassi%7c2233391784121335%7c0%7c0%7c0%7c0&p=7&tag=1
Roddick also uses one. Am I missing something?
It may depend on how you're tying it, you cant have it above the bottom cross string. You can use vibration dampners as illegally as rubber bands, so I think it would be misleading to say rubber bands are illegal for pros.