2025 Stats
W-L
5-4
ERA
3.11
WHIP
1.00
K
84
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
Schwellenbach was one of the biggest surprises of the 2024 season, as he posted a 3.35 ERA, 1.04 WHIP and 127:23 K:BB across 123.2 innings spanning 21 starts for Atlanta after getting the call in late May. He was especially stingy down the stretch, going 5-2 with a 2.47 ERA, 0.96 WHIP and six strikeouts for every one walk in his final 73 innings. While he had some prospect pedigree as a second-round pick in 2021, this level of success was impossible to foresee for a player that had not pitched above the High-A level coming into the season. After missing all of 2022 following Tommy John surgery, Schwellenbach made his professional debut in 2023, pitching a total of 65 innings that year. In another day and age, the jump from 65 innings to 168.2 total frames last season would scare some drafters off, but conventional wisdom regarding pitching injuries has been challenged in recent years. Most will be eager to draft an arm of this caliber, so long as the pitcher is ostensibly healthy in the moment. A jump in strikeouts is possible with his six-pitch mix and 96th percentile chase rate. Read Past Outlooks
Tosses first complete game
Schwellenbach (5-4) earned the win against the Brewers on Wednesday, allowing two runs on five hits and no walks with nine strikeouts over nine innings.
ANALYSIS
Schwellenbach allowed runs in the second and eighth innings but still went the distance for his first career complete game. He was highly efficient, throwing 76 of 105 pitches for strikes while generating 15 whiffs. The 25-year-old has now worked at least six frames in seven straight outings, six of which have been quality starts. He'll carry a 3.11 ERA, 1.00 WHIP and 84:14 K:BB across 89.2 innings into a home matchup with the Mets next week.
Schwellenbach allowed runs in the second and eighth innings but still went the distance for his first career complete game. He was highly efficient, throwing 76 of 105 pitches for strikes while generating 15 whiffs. The 25-year-old has now worked at least six frames in seven straight outings, six of which have been quality starts. He'll carry a 3.11 ERA, 1.00 WHIP and 84:14 K:BB across 89.2 innings into a home matchup with the Mets next week.
Pitching Stats
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2025
2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
93
Last 10 Games
94
Last 5 Games
96
How many pitches does Spencer Schwellenbach 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 Spencer Schwellenbach 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
-16%
BAA vs RHP
2025
-8%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .245 | 88 | 27 | 100 | 16 | |||
| Since 2023vs Right | .206 | 123 | 10 | 82 | 8 | |||
| 2025vs Left | .234 | 33 | 11 | 41 | 9 | |||
| 2025vs Right | .215 | 51 | 3 | 35 | 1 | |||
| 2024vs Left | .253 | 55 | 16 | 59 | 7 | |||
| 2024vs Right | .200 | 72 | 7 | 47 | 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
-45%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 2.91 | 0.99 | 117.2 | 9.6 | 1.1 | ||||
| Since 2023Away | 3.67 | 1.07 | 95.2 | 8.1 | 2.1 | ||||
| 2025Home | 2.29 | 1.02 | 51.0 | 9.7 | 1.2 | ||||
| 2025Away | 4.19 | 0.98 | 38.2 | 6.8 | 1.6 | ||||
| 2024Home | 3.38 | 0.98 | 66.2 | 9.5 | 1.1 | ||||
| 2024Away | 3.32 | 1.12 | 57.0 | 9.0 | 2.4 | ||||
| 2023Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2023Away | 0 | 0 | 0 | 0 | 0 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Spencer Schwellenbach compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 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 120 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 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
5.36K/9
8.4BB/9
1.6HR/9
1.0Fastball
96.8 mphERA
3.24WHIP
1.05BABIP
.289GB/FB
2.09Left On Base
69.1%Exit Velocity
83.3 mphBarrels/BBE
4.3%Spin Rate
2173 rpmBalls Hit 95+ MPH
26.2%Swinging Strike
13.1%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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2024 Fantasy Outlook
Atlanta gave Schwellenbach $1 million after drafting him out of Nebraska in the second round in 2021 and he had Tommy John surgery right after the draft. He put up good numbers in 2023 as a 23-year-old in the lower levels, but his stuff ticked up in 2024, with his fastball going from a 93-94 mph pitch to a 95-96 mph offering. He generated groundballs over 55 percent of the time at High-A and Double-A and was surprisingly summoned to the big-league rotation after just two starts at Double-A. There's nothing about Schwellenbach's arsenal or command that would cap his short-term potential, but even as an older prospect, it's quite the jump in competition to the majors after logging only 13 innings above High-A, so there could be some understandable bumps in the road.
More Fantasy News
Middling performance Friday
Schwellenbach allowed four runs (three earned) on six hits and two walks while striking out four over six innings in a no-decision versus the Giants on Friday.
ANALYSIS
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Strikes out 11 in win
Schwellenbach (4-4) earned the win against the Red Sox on Saturday, allowing five hits and no walks while striking out 11 over 6.1 innings.
ANALYSIS
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Fans 11 in losing effort
Schwellenbach (3-4) took the loss Sunday against San Diego. He pitched seven innings, allowing four runs (two earned) on seven hits and no walks with 11 strikeouts.
ANALYSIS
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Goes seven innings in win
Schwellenbach (3-3) earned the win against the Red Sox on Sunday, allowing four runs on six hits and one walk with three strikeouts over seven innings.
ANALYSIS
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Collects second win
Schwellenbach (2-3) picked up the win Tuesday, giving up two runs on four hits and two walks over seven innings in a 5-2 victory over the Nationals. He struck out three.
ANALYSIS
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