I have a friend whose racquet doesn't seem to have a brand name painted on it. However, it has Boris Becker's name on it and the logo "BB" on the buttcap. Other information painted on the racquet includes the words "CTS Thunderstick" and a few numbers I can't quite recall now. It's not a Puma Becker (http://sport.supereva.it/borisbecker.freeweb/racchetta.htm?p) because its color is black, not red and blue. Does anyone know the history of this kind of racquet? I'll take pictures next time I see this racquet and put them up here.