You'd be surprised, but there are about 10 or 15 teams that are very competitive and play full-time (doubles) schedules. Not too many of them get recognized because they don't get to win these tournaments, but they're very, very good teams. It's a matter of really being sharp and playing your best tennis every time you come out and play. But the Top 15 teams are very, very dangerous on any given day.
— Max Mirnyi
PlayTime