2025 Stats
W-L
0-0
ERA
0.00
WHIP
1.50
K
2
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
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
Birdsong and Roupp were the final two candidates for the last spot in the rotation after the Giants optioned Kyle Harrison to Triple-A Sacramento on Saturday. Despite recording a 0.75 ERA across 12 Cactus League innings this spring, Birdsong will head to the bullpen and likely serve in a long-relief role while he waits for a starting role to open up.
Birdsong and Roupp were the final two candidates for the last spot in the rotation after the Giants optioned Kyle Harrison to Triple-A Sacramento on Saturday. Despite recording a 0.75 ERA across 12 Cactus League innings this spring, Birdsong will head to the bullpen and likely serve in a long-relief role while he waits for a starting role to open up.
Pitching Stats
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2025
2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
26
Last 10 Games
26
Last 5 Games
26
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
Even Split
2025
-100%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .217 | 48 | 29 | 33 | 4 | |||
| Since 2023vs Right | .217 | 42 | 15 | 26 | 7 | |||
| 2025vs Left | .000 | 0 | 1 | 0 | 0 | |||
| 2025vs Right | .250 | 2 | 0 | 2 | 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
-21%
ERA at Home
2025
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 4.02 | 1.40 | 31.1 | 11.5 | 5.5 | ||||
| Since 2023Away | 5.06 | 1.38 | 42.2 | 10.5 | 5.3 | ||||
| 2025Home | 0 | 0 | 0 | 0 | 0 | ||||
| 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
9.0BB/9
4.5HR/9
0.0Fastball
0.0 mphERA
0.00WHIP
1.50BABIP
.355GB/FB
1.00Left On Base
100.0%Exit Velocity
0.0 mphBarrels/BBE
0.0%Spin Rate
0 rpmBalls Hit 95+ MPH
0.0%Swinging Strike
11.1%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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Recent RotoWire Articles Featuring Hayden Birdsong See More
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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
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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Generating buzz in rotation bid
Birdsong struck out eight over five scoreless innings against the A's on Sunday and now has a 0.75 ERA, 0.50 WHIP and 18:0 K:BB over 12 Cactus League innings this spring.
ANALYSIS
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Still in mix for rotation
Birdsong has a 2.89 ERA and a 13:1 K:BB this spring, including an outing against minor leaguers that doesn't count toward his Cactus League stats, and he is in the mix for a rotation spot, Justice delos Santos of The San Jose Mercury News reports.
ANALYSIS
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