16. Tennis rules
16.1 If the first set of a match is not completed, all bets related to the match will be voided, except for bets on any markets that have been unconditionally determined (e.g. game winner markets that were already completed).
16.2 In the case that the player retires after the first set is completed, then the retiring player will be settled as a loser on the match winner market and their opponent will be settled as the winner. The set betting market will be voided.
16.3 When there is uncertainty about the outcome of an incomplete or cancelled match, Smarkets will settle match bets according to which player or pairing goes through to the next round, or who wins the tournament overall if the match is a final.
16.4 Any cancellation, postponement or change to the length of a tournament will void all bets relating to occurrences of certain events within a tournament unless the outcome of those markets has already been determined.
16.5 Any change to the scheduled number of games or sets required to win a match, or a retirement or disqualification during a game or set, will void bets on affected game betting and set betting markets unless the outcome of those markets has already been determined.
16.6 Smarkets will not void bets due to changes in venue or changes in the playing surface.
16.7 The 36-hour postponement rule explained in rule 6.3 does not apply for tennis markets.
16.8 When a Championship Tie Break is played for the final set, this will only count as one game played.
Last modified: July 31, 2019.