In doubles, the top-ranked team is the pair who, over the previous 52 weeks, has gathered the most ATP rankings points.
The ATP has used a computerized system for determining doubles rankings since 1976.
An updated rankings list is released at the beginning of each week.
As of 2017,[update] ranking is based on calculating, for each player, his total points from his best 18 results from all eligible tournaments, including the ATP Finals (Doubles) played in the 52-week ranking period.
For entry purposes there are no mandatory events, however, once a player is accepted in the main draw of one of these 12 tournaments, as a direct acceptance, a qualifier or a lucky loser or having accepted a wildcard, his result in this tournament shall count for his ranking, whether or not he participates.