| Year | Team Name | Manager | Owner | League | Rank | W | L | Pct | RF - RA | RD | Playoffs | Cup Group | W | L | Cup | Rank | Rating | Power Index |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2063 | Saitama Lions | Harimoto | - | Nippon Professional | 2 | 85 | 75 | .531 | 4.7 - 4.7 | -4 | - | Japan-1 | 16 | 10 | 2 rds | 3 | 112.78 | 97.8 |
| 2064 | Saitama Lions | Harimoto | - | Nippon Professional | 1 | 97 | 63 | .606 | 5.9 - 4.6 | +206 | L | Japan-2 | 12 | 10 | 1 rd | 4 | 123.57 | 93.9 |
| 2065 | Saitama Lions | Harimoto | - | Nippon Professional | 2 | 93 | 67 | .581 | 5.0 - 4.5 | +84 | - | Japan-1 | 9 | 11 | - | 4 | 124.29 | 95.4 |
| 2066 | Saitama Lions | Harimoto | - | Nippon Professional | 1 | 100 | 60 | .625 | 5.6 - 4.1 | +240 | L | Japan-2 | 12 | 11 | 1 rd | 2 | 130.91 | 95.9 |
| 2067 | Saitama Lions | Harimoto | - | Nippon Professional | 1 | 101 | 59 | .631 | 5.4 - 4.0 | +215 | W | Japan-2 | 16 | 7 | 1 rd | 1 | 166.88 | 97.0 |
| 2068 | Saitama Lions | Harimoto | - | Nippon Professional | 2 | 94 | 66 | .588 | 5.0 - 4.2 | +139 | - | Japan-1 | 9 | 11 | - | 2 | 138.30 | 96.6 |
| 2069 | Saitama Lions | Harimoto | - | Nippon Professional | 1 | 106 | 54 | .663 | 5.5 - 4.0 | +237 | W | Japan-1 | 10 | 10 | - | 1 | 161.32 | 97.8 |
| 2070 | Saitama Lions | Harimoto | - | Nippon Professional | 1 | 102 | 58 | .638 | 5.7 - 4.1 | +257 | L | Japan-2 | 11 | 11 | 1 rd | 2 | 141.81 | 98.1 |
| 2071 | Saitama Lions | Harimoto | - | Nippon Professional | 1 | 97 | 63 | .606 | 6.0 - 4.5 | +235 | W | Japan-1 | 19 | 4 | 1 rd | 1 | 157.14 | 98.8 |
| 2072 | Saitama Lions | Harimoto | - | Nippon Professional | 1 | 99 | 61 | .619 | 6.4 - 4.7 | +264 | W | Japan-2 | 8 | 12 | - | 1 | 147.81 | 96.6 |
| 2073 | - | - | - | Nippon Professional | - | 0 | 0 | .000 | 0.0 - 0.0 | 0 | - | Japan-2 | 0 | 0 | - | - | 0.00 | 0.0 |
| Total | 5777 | 5744 | .501 | 5.1 - 5.0 | +654 | 688 | 682 | 1 | 166.88 | 98.8 |