I don't understand how the brackets work in tennis. Hypothetically, if all 32 seeded players make it to the 3rd round, number 1 should play against number 32 and 16 play against 17? If the top 8 seeds make it to the quarters, then 1 should play 8, 2 should play 7, 3 should play 6, etc... But it doesn't appear to work that way. At the French Open 3rd round, women's side, it was 15 vs 21, 31 vs 6, and 32 vs an unseeded player. Since 32 (Dulko) and 1 (Mauresmo) both made the 3rd round, it would make sense for them to face each other. How does this work?