Head to head · 2025 pitching
Hayden Birdsong vs Roki Sasaki
In 2025 Hayden Birdsong has been worth 0.3 more wins. Both lines are computed from play-by-play on the same constants, so they are measured the same way rather than quoted from two sources.
- Their 2025 seasons were among each other's nearest on rate statistics.
2025 season
| Statistic | Hayden Birdsong | Roki Sasaki |
|---|---|---|
| G | 21 | 10 |
| GS | 10 | 8 |
| IP | 65.2 | 36.1 |
| W | 4 | 1 |
| SO | 68 | 28 |
| ERA | 4.80 | 4.46 |
| FIP | 4.96 | 5.80 |
| WHIP | 1.49 | 1.43 |
| K/9 | 9.3 | 6.9 |
| BB/9 | 5.1 | 5.4 |
| FIP− | 119 | 140 |
| WAR | -0.0 | -0.3 |
Postseason
Box-score figures only: October is kept out of the season constants, so there is no wOBA, FIP or dbWAR for it.
| Statistic | Hayden Birdsong | Roki Sasaki |
|---|---|---|
| G | — | 12 |
| GS | — | 0 |
| IP | — | 14.0 |
| W | — | 0 |
| SV | — | 3 |
| SO | — | 8 |
| BB | — | 8 |
| ERA | — | 1.29 |
| WHIP | — | 1.14 |
| K/9 | — | 5.1 |
| BB/9 | — | 5.1 |
Career
Totalled over the seasons published here, which is not the same as a whole career: a player who debuted before 2005 begins at 2005, not at his real first game.
| Statistic | Hayden Birdsong | Roki Sasaki |
|---|---|---|
| G | 37 | 36 |
| GS | 26 | 31 |
| IP | 137.2 | 158.2 |
| W | 9 | 6 |
| L | 10 | 6 |
| SV | 0 | 0 |
| SO | 156 | 151 |
| BB | 80 | 70 |
| ERA | 4.77 | 4.48 |
| WHIP | 1.44 | 1.34 |
| K/9 | 10.2 | 8.6 |
| BB/9 | 5.2 | 4.0 |
| HR/9 | 1.4 | 1.6 |
| WAR | 0.3 | 0.4 |
More head to heads
The same seasons, measured against somebody else.
FIP uses the constant solved from this season’s own runs, and FIP− is park-adjusted against the same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page. To put these two beside a third, the comparison page takes up to four.