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Western Conference
Eastern Conference
Central Conference
Quarter-finals
Semi-finals
Final
Final
2018/19 Main
Western Conference
| Pl | W | L | PCT | |||
| 1 | Ryukyu | 60 | 40 | 20 | 4486:4125 | 0.667 |
| 2 | Diamond Dolphins | 60 | 33 | 27 | 4871:4819 | 0.550 |
| 3 | Kyoto | 60 | 31 | 29 | 4642:4810 | 0.517 |
| 4 | Osaka | 60 | 23 | 37 | 4117:4383 | 0.383 |
| 5 | Shiga | 60 | 18 | 42 | 4375:4680 | 0.300 |
| 6 | Fukuoka | 60 | 12 | 48 | 4371:4800 | 0.200 |
Eastern Conference
| Pl | W | L | PCT | |||
| 1 | Chiba | 60 | 52 | 8 | 5157:4282 | 0.867 |
| 2 | Utsunomiya Brex | 60 | 49 | 11 | 4873:4254 | 0.817 |
| 3 | Alvark | 60 | 44 | 16 | 4692:4180 | 0.733 |
| 4 | Sun Rockers Shibuya | 60 | 27 | 33 | 4516:4674 | 0.450 |
| 5 | Akita | 60 | 17 | 43 | 4279:4691 | 0.283 |
| 6 | Hokkaido | 60 | 10 | 50 | 4266:4930 | 0.167 |
Central Conference
| Pl | W | L | PCT | |||
| 1 | Niigata | 60 | 45 | 15 | 4811:4400 | 0.750 |
| 2 | Brave Thunders | 60 | 40 | 20 | 4805:4555 | 0.667 |
| 3 | Toyama | 60 | 32 | 28 | 5022:4909 | 0.533 |
| 4 | SeaHorses Mikawa | 60 | 31 | 29 | 4742:4693 | 0.517 |
| 5 | NeoPhoenix | 60 | 22 | 38 | 4420:4705 | 0.367 |
| 6 | Yokohama | 60 | 14 | 46 | 4499:5054 | 0.233 |
2018/19 Play Offs
Quarter-finals
| 1 | Chiba | Toyama | 2 : 0 |
| 2 | Brave Thunders | Utsunomiya Brex | 0 : 2 |
| 3 | Ryukyu | Diamond Dolphins | 2 : 1 |
| 4 | Niigata | Alvark | 0 : 2 |
Semi-finals
| 1 | Chiba | Utsunomiya Brex | 2 : 0 |
| 2 | Ryukyu | Alvark | 1 : 2 |
Final
| 1 | Chiba | Alvark | 67 : 71 |
2018/19 Play Out
Final
| 1 | Yokohama | Hokkaido | 1 : 2 |
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