37 or 38 teams
| Round 1 | Round 2 | Round 3 | Round 4 | Round 5 |
| 1 2 |
22 37 |
1 5 |
35 (*) 38 |
3 22 |
| 3 4 |
36 38 |
9 17 |
16 20 |
1 21 |
| 5 6 |
32 34 |
3 13 |
26 30 |
2 23 |
| 7 8 |
28 30 |
7 18 |
25 31 |
17 24 |
| 9 10 |
24 26 |
6 11 |
24 28 |
5 25 |
| 11 12 |
33 35 |
10 15 |
23 27 |
7 26 |
| 13 14 |
29 31 |
14 19 |
22 29 |
6 27 |
| 15 16 |
25 27 |
2 20 |
32 37 |
14 28 |
| 17 18 |
14 16 |
8 16 |
21 33 |
9 29 |
| 19 20 |
21 23 |
4 12 |
34 36 |
15 30 |
| 21 22 |
18 20 |
21 25 |
12 19 |
4 32 |
| 23 24 |
10 12 |
22 24 |
4 8 |
11 31 |
| 25 26 |
6 8 |
23 36 |
11 13 |
10 33 |
| 27 28 |
2 4 |
27 32 |
15 18 |
12 34 |
| 29 30 |
17 19 |
31 38 |
2 6 |
13 35 |
| 31 32 |
13 15 |
28 35 |
7 10 |
8 36 |
| 33 34 |
9 11 |
26 37 |
5 14 |
16 37 |
| 35 36 |
5 7 |
30 34 |
3 17 |
18 38 |
| 37 38 |
1 3 |
29 33 |
1 9 |
19 (*) 20 |
- If you have 37 teams, card 38 is a bye.
- The matches marked (*) have a non-zero chance of being a repeat. In round 4 the fix is to switch the team with card 16 with card 35. In round 5 you might try recombining cards 18, 19, 20, and 38 if there is a way to pair them with no repeat match. (16 & 37, and 8 & 36 are also rooms with 1-3 and 0-4 teams).