Table S1

Nomenclature for Uncompleted Matches in Tennis and Their Impact. (Adapted from “The 2023 ATP Official Rulebook)

Terms	Description	Ranking	Money prize
Retirements	Occurs when a player is forced to leave a match during its course due to injury, illness, or other circumstances that prevents him from continuing to play. In this case, the victory is awarded to the opponent.	The absent player keeps the points earned in previous matches in the tournament.	The player who is absent generally receives the money prize corresponding to his performance in the tournament up to that point.
Withdrawals	Occurs when a player voluntarily withdraws from the tournament prior to his scheduled match due to injury, illness, or other personal reasons.	The player who withdraws does not earn points for the tournament.	The player who withdraws does not receive financial rewards.
Walkover	Occurs when a player wins a match without playing due to the absence of the opponent. This may be due to injury, illness, or other personal circumstances that prevent the opponent from competing.	The player who receives the walkover earns points equivalent to a victory.	The player who receives the walkover is awarded the money corresponding to his/her performance in that round.
Default	Occurs when a player is disqualified for a single code violation, as stated in the Penalty Schedule during the match, or when a player is removed for a single code violation during the event, but not during the match.	The disqualified player does not earn ranking points.	The disqualified player may be fined and forfeit tournament prizes.