It fits best at quarterback with a fit of 43.8 — 496th of 1025 at that position, and 58th in Hoenn. Its next best use is slot receiver at 43.2.
The only spot that rewards Sp. Atk heavily, and the single most valuable place on the field. Arm talent comes from Sp. Atk, poise and reads from Sp. Def, and a mobile quarterback gets a real boost from Speed. Body size is irrelevant here.

The six numbers the game reads. Everything on this page is derived from them.
The working behind the 43.8 fit, line by line.
| Value | Of ceiling | Weight | Points |
|---|---|---|---|
| Sp. Atk70 | 42% | 34% | 14.2 |
| Sp. Def70 | 42% | 22% | 9.2 |
| Speed70 | 45% | 18% | 8.2 |
| HP70 | 38% | 16% | 6.2 |
| Attack70 | 42% | 10% | 4.2 |
| Normal type bonusNormal | 100% | 2% | +2.0 |
| Fit at Quarterback | 43.8 | ||
Fit is the 0–100 rating the game keeps hidden. Ranks compare against all 1,025 Pokémon and against its own generation.
| Position | Fit | Rank, all | Rank, Gen 3 |
|---|---|---|---|
| Quarterback | 43.8 | 496th | 58th |
| Halfback | 40.3 | 582nd | 66th |
| Fullbackfullback only | 32.2 | 697th | 91st |
| Slot receiverslot only | 43.2 | 502nd | 55th |
| Wide receiver | 38.6 | 586th | 74th |
| Tight end | 30.9 | 718th | 89th |
| Offensive line | 28.4 | 735th | 95th |
| Defensive end | 36.4 | 656th | 79th |
| Nose tackle3-4 only | 26.7 | 760th | 97th |
| Defensive tackle4-3 only | 29.7 | 737th | 95th |
| Outside linebacker | 42.4 | 557th | 62nd |
| Inside linebacker3-4 only | 41.6 | 581st | 65th |
| Middle linebacker4-3 only | 41.7 | 584th | 66th |
| Cornerback | 40.1 | 575th | 68th |
| Safety | 42.4 | 536th | 57th |
Castform is best used at quarterback, but you still draft and play in the game itself.
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