Show me the ladder when margin under 20
Ladder when margin is under 20. PTA is ranked first with a record of 7-2-0 from 9 games
| # | Team | P | W | L | D | Win % |
|---|---|---|---|---|---|---|
| 1 | PTA | 9 | 7 | 2 | 0 | 77.78 |
| 2 | GWS | 10 | 7 | 3 | 0 | 70.00 |
| 3 | GCS | 8 | 5 | 3 | 0 | 62.50 |
| 4 | GEE | 10 | 6 | 4 | 0 | 60.00 |
| 5 | HAW | 7 | 4 | 3 | 0 | 57.14 |
| 6 | MEL | 9 | 5 | 4 | 0 | 55.56 |
| 7 | ESS | 11 | 6 | 4 | 1 | 54.55 |
| 8 | STK | 14 | 7 | 7 | 0 | 50.00 |
| 9 | BRI | 8 | 4 | 3 | 1 | 50.00 |
| 10 | WBD | 6 | 3 | 3 | 0 | 50.00 |
| 11 | COL | 13 | 6 | 5 | 2 | 46.15 |
| 12 | CAR | 14 | 6 | 8 | 0 | 42.86 |
| 13 | NTH | 8 | 3 | 5 | 0 | 37.50 |
| 14 | SYD | 6 | 2 | 4 | 0 | 33.33 |
| 15 | RIC | 6 | 2 | 4 | 0 | 33.33 |
| 16 | WCE | 6 | 2 | 4 | 0 | 33.33 |
| 17 | ADE | 12 | 3 | 8 | 1 | 25.00 |
| 18 | FRE | 9 | 2 | 6 | 1 | 22.22 |