# How are doubles seeds calculated?

For singles, the seeding in the tournaments is rather straightforward: We simply look at the rankings and the players with top 8 (or 16 or 32) rankings are seeded.

However, for doubles competition we cannot use such simple procedure. There are ATP rankings and WTA rankings (and, in the case of junior events, ITF rankings) for doubles. However, the players are ranked individually. For example, it might happen that in a tournament player which is No. 1 in doubles plays together with the player who is No.4. If the players ranked 2nd and 3rd would enter the same tournament, which of these couples would be ranked higher? Or is the seeding somehow calculated based on the number of the points each player have gained?

Similar question can be asked about mixed doubles. (Although mixed doubles competition is not played at many tournaments. I am only aware Grand Slams, Olympic Games, Hopman Cup and Youth Olympics.) I am unaware of a ranking for mixed doubles. Is the ranking in this case somehow combined from the doubles ATP and WTA rankings?

To summarize:

• Based on what are couples in doubles competition seeded?
• Is the procedure to obtain doubles seeds the same for Grand Slams, ATP tournaments, WTA tournaments, junior tournaments?
• What about mixed doubles?

## 1 Answer

To answer my question at least partially I will add what I found out when reading ATP and WTA rulebook. In case I misunderstood something, I will be grateful for any corrections or new answers to my question. (This answer does not contain anything about Grand Slams and junior tournaments, which are governed by ITF. I also did not mention mixed doubles. But I think that it is very probable that the rules there are the same.)

In short, the seeding is decided based on combined ranking, which means adding together the rankings of the two players (in the ATP/WTA doubles ranking). In case the combined ranking are equal (for example, if players ranked 1 and 4 enter the tournament together and so do players number 2 and 3), further tie-breakers are used. They are specified in details in the ATP/WTA rulebook.

The relevant part from 2015 ATP rulebook:

VII. THE COMPETITION

7.13 Selection of Entries

C. Doubles Main Draw - ATP World Tour and ATP Challenger Tour Direct acceptances for ATP World Tour and ATP Challenger Tour events shall be in the following order:

1) Teams composed of players in either the Emirates ATP Rankings or the Emirates ATP Doubles Rankings. The combined positions of the two players (using best Emirates ATP Rankings (singles or doubles) shall be added together and the total used to determine the direct acceptances. The most recent Emirates ATP Rankings and/or Emirates ATP Doubles Rankings list, including a protected ranking, shall be used. Ties shall be resolved as follows:
a) Team using two (2) singles rankings.
b) Team using one (1) singles ranking.
c) A team using a protected ranking is positioned below the other team(s); if one player on each team is using a protected ranking then the position of each remaining player determines which team is positioned higher.
d) For ties between teams with the same composition, priority will be given to the team with the strongest individual Emirates ATP Rankings, including protected ranking, or for teams using two Emirates ATP Doubles Rankings, the fewest number of tournaments played and then the team with the highest number of points.

D. Seeds - ATP World Tour and ATP Challenger Tour

Seeded teams will be determined by using the combined Emirates ATP Doubles Rankings of the two players (protected ranking not included). Ties shall be broken as follows:
1) The team with the fewest events played is positioned higher.
2) The team with the highest number of points is positioned higher.
3) A coin flip or draw if a tie remains.

The relevant part from 2015 WTA Rulebook:

3. Doubles Main Draw

c. Acceptance

i. Doubles acceptance will be based on the WTA Doubles Rankings the week prior to the start of play (the same date rankings used for the singles seeding).
ii. Entry cutoffs and seeding will be determined by the highest combined ranking of the teams entered. If teams are tied, the tie-break procedure will be in the following order:
(a) Team with the greatest combined total points;
(b) Team with the highest combined ranking from the previous week; and
(c) Team with the fewest combined number of Tournaments played over the previous 52-week period.
iii. For entries and seeding, unranked players will be assigned a rank of one (1) plus the lowest player listed on the most current ranking used for the acceptances.