2025 Stats
W-L
0-0
ERA
0.00
WHIP
1.14
K
6
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
Birdsong began last season at Double-A Richmond but wound up making 16 starts for the Giants. He flashed plenty of swing-and-miss ability with a 27.9 percent strikeout rate and a pair of double-digit strikeout outings, but the young right-hander also had an ugly 13.7 percent walk rate and completed six innings in just one of his 16 starts. Birdsong has three legitimate secondary pitches in his curveball, changeup and slider, with each garnering a whiff rate of at least 32.7 percent and all three offerings earning excellent Stuff+ grades. However, his Location+ of 92 was among the worst in baseball for a regular starter, which no doubt was the main reason why opponents had an obscene 50 percent hard-hit rate. There's legitimate upside with Birdsong and he could open 2025 in the Giants' rotation, but he'll have to improve his command and control to be a reliable option in fantasy. Read Past Outlooks
Strong start to season continues
Birdsong threw three scoreless innings during Tuesday's 1-0 loss to the Reds, allowing a hit and a walk while striking out two.
ANALYSIS
Birdsong threw 25 of his 39 pitches for strikes during his third appearance of the season. The 23-year-old gave up a double to begin the ninth frame, but he kept his composure and retired Cincinnati's next three hitters. Manager Bob Melvin said postgame, "The velocity's been there out of the bullpen as well, all his pitches working -- he just looks like he's really confident," according to Susan Slusser of the San Francisco Chronicle. Birdsong has recorded a 0.00 ERA, 1.14 WHIP and a 6:3 K:BB over seven innings so far this season.
Birdsong threw 25 of his 39 pitches for strikes during his third appearance of the season. The 23-year-old gave up a double to begin the ninth frame, but he kept his composure and retired Cincinnati's next three hitters. Manager Bob Melvin said postgame, "The velocity's been there out of the bullpen as well, all his pitches working -- he just looks like he's really confident," according to Susan Slusser of the San Francisco Chronicle. Birdsong has recorded a 0.00 ERA, 1.14 WHIP and a 6:3 K:BB over seven innings so far this season.
Pitching Stats
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2025
2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
31
Last 10 Games
31
Last 5 Games
31
How many pitches does Hayden Birdsong generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Hayden Birdsong generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
-5%
BAA vs RHP
2025
-30%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .219 | 50 | 29 | 35 | 4 | |||
| Since 2023vs Right | .209 | 44 | 17 | 27 | 7 | |||
| 2025vs Left | .250 | 2 | 1 | 2 | 0 | |||
| 2025vs Right | .176 | 4 | 2 | 3 | 0 | |||
| 2024vs Left | .217 | 48 | 28 | 33 | 4 | |||
| 2024vs Right | .214 | 40 | 15 | 24 | 7 | |||
| 2023vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2023vs Right | 0 | 0 | 0 | 0 | 0 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2023
-31%
ERA at Home
2025
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.47 | 1.35 | 36.1 | 10.9 | 5.2 | ||||
| Since 2023Away | 5.06 | 1.38 | 42.2 | 10.5 | 5.3 | ||||
| 2025Home | 0.00 | 1.00 | 5.0 | 7.2 | 3.6 | ||||
| 2025Away | 0.00 | 1.50 | 2.0 | 9.0 | 4.5 | ||||
| 2024Home | 4.02 | 1.40 | 31.1 | 11.5 | 5.5 | ||||
| 2024Away | 5.31 | 1.38 | 40.2 | 10.6 | 5.3 | ||||
| 2023Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2023Away | 0 | 0 | 0 | 0 | 0 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Hayden Birdsong compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
2.00K/9
7.7BB/9
3.9HR/9
0.0Fastball
96.6 mphERA
0.00WHIP
1.14BABIP
.267GB/FB
0.83Left On Base
100.0%Exit Velocity
81.2 mphBarrels/BBE
3.4%Spin Rate
2331 rpmBalls Hit 95+ MPH
24.1%Swinging Strike
12.9%Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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2024 Fantasy Outlook
Known for his premium stuff and wild control heading into 2023, Birdsong kept the starting pitching dream alive by throwing more strikes than expected as a 21-year-old at Single-A and High-A. From April 26 through July 30, Birdsong had a 2.48 ERA, 1.06 WHIP, 100 strikeouts and 25 walks in 69 innings. That dominant run was book-ended by some struggles, particularly a 12.5 percent walk rate in 23 innings after a late-season promotion to Double-A. Birdsong's stuff and potential home park are still an alluring combination in dynasty leagues. The 6-foot-4 righty boasts a plus mid-90s fastball, a potentially plus low-80s curveball and a solid slider. If he shows improved control in a return to Double-A, Birdsong will have an up arrow next to his name as a potential high-strikeout mid-rotation starter who could reach the majors in late 2024 or early 2025. An eventual move to relief remains a possibility.
More Fantasy News
Makes first appearance of 2025
Birdsong threw two scoreless innings during Wednesday's 6-3 win over the Astros, allowing two hits with two strikeouts and a walk.
ANALYSIS
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Starting season in bullpen
Birdsong will work out of the San Francisco bullpen to begin the season after Landen Roupp was named the team's fifth starter Monday, Alex Pavlovic of NBC Sports Bay Area reports.
ANALYSIS
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OK after fingernail issue
Birdsong is expected to be fine after dealing with a cracked right middle fingernail during an appearance Sunday in an exhibition game versus Triple-A Sacramento, Shayna Rubin of the San Francisco Chronicle reports.
ANALYSIS
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Makes San Francisco's roster
Birdsong has made the Giants' Opening Day roster, Jon Heyman of the New York Post reports.
ANALYSIS
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Still in mix for fifth-starter role
Birdsong remains neck-and-neck with Landen Roupp for the fifth-starter role, Susan Slusser of the San Francisco Chronicle reports.
ANALYSIS
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