One player challenges another to play a best of 3 or 5 sets match. The organizer picks 3 or 5 tasks (don't have to be tennis related) and the makers have at least 24h to send them in. Then the match is played like any other in the tournaments we had so far.
Duels do not count for the rankings and in head2head
__________________ Tennis Tipping Titles: (S) Vancouver 100k 2014, Cagnes-Sur-Mer 100k 2013 (D) Caserta 2013, Tinajo I 2014 (w/SilverSlam) Tipping Titles: (S) New Haven 2012 (D) AO 2014 (w/Zenith.), Miami 2014