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Hayden Birdsong

Relief pitcher · San Francisco Giants. 2025 season stats with ranks among qualified players.

Pitching, 2025

Hayden Birdsong posted a 4.80 ERA and a 4.96 FIP with a 22.8% strikeout rate over 65.7 innings in 2025.

Stat	2025	Percentile
Innings pitched	65.7	–
Starts	10	–
ERA	4.80	10th percentile
FIP	4.96	6th percentile
xFIP	5.06	4th percentile
Strikeout %	22.8%	47th percentile
Walk %	12.4%	5th percentile
K-BB%	10.4%	15th percentile
Home runs per 9	1.37	15th percentile
Whiff %	25.5%	63rd percentile
Fastball velocity	95.5	–

Percentile compares each number with the 198 qualified pitchers in 2025 (100th = best, including for stats where lower is better).

Recent seasons

Season	IP	ERA	FIP	K%	BB%
2025	65.7	4.80	4.96	22.8%	12.4%
2024	72.0	4.75	4.67	27.9%	13.7%

San Francisco Giants teammates

About these numbers

Season totals and rates from every regular-season game. wRC+ is runs created adjusted for park and league (100 is average); FIP and xFIP estimate a pitcher's run prevention from strikeouts, walks and home runs; K-BB% is strikeout rate minus walk rate.

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