2025 Stats
W-L
1-1
ERA
2.55
WHIP
0.85
K
22
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
Knocked around for six runs
Schwellenbach (1-1) allowed six runs on six hits and two walks while striking out three in six innings in a loss to the Blue Jays on Tuesday.
ANALYSIS
Schwellenbach allowed just one run through four innings before running into trouble in the fifth. He walked a batter and allowed four hits, with two of those being home runs, before getting an out in the inning and eventually exited down 6-1. Schwellenbach was off to a brilliant start before Tuesday with a 0.45 ERA and 0.65 WHIP through his first three outings. He'll aim to return to his dominant ways in a home start versus the Cardinals next week.
Schwellenbach allowed just one run through four innings before running into trouble in the fifth. He walked a batter and allowed four hits, with two of those being home runs, before getting an out in the inning and eventually exited down 6-1. Schwellenbach was off to a brilliant start before Tuesday with a 0.45 ERA and 0.65 WHIP through his first three outings. He'll aim to return to his dominant ways in a home start versus the Cardinals next week.
Pitching Stats
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2025
2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
89
Last 10 Games
89
Last 5 Games
89
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
-22%
BAA vs RHP
2025
-38%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .246 | 67 | 19 | 70 | 10 | |||
| Since 2023vs Right | .191 | 82 | 9 | 52 | 7 | |||
| 2025vs Left | .216 | 12 | 3 | 11 | 3 | |||
| 2025vs Right | .135 | 10 | 2 | 5 | 0 | |||
| 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
-19%
ERA at Home
2025
-87%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 2.90 | 0.94 | 80.2 | 9.5 | 1.1 | ||||
| Since 2023Away | 3.59 | 1.09 | 67.2 | 8.5 | 2.4 | ||||
| 2025Home | 0.64 | 0.79 | 14.0 | 9.6 | 1.3 | ||||
| 2025Away | 5.06 | 0.94 | 10.2 | 5.9 | 2.5 | ||||
| 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
4.40K/9
8.0BB/9
1.8HR/9
1.1Fastball
96.4 mphERA
2.55WHIP
0.85BABIP
.215GB/FB
2.77Left On Base
83.3%Exit Velocity
81.4 mphBarrels/BBE
1.1%Spin Rate
2172 rpmBalls Hit 95+ MPH
20.7%Swinging Strike
14.7%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
Gives up first run in strong start
Schwellenbach didn't factor into the decision Thursday against Philadelphia after giving up one run on seven hits and two walks in six innings. He struck out five.
ANALYSIS
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Furious start to 2025 continues
Schwellenbach (1-0) recorded the win after allowing two hits and no walks in eight innings Friday against the Marlins, striking out 10.
ANALYSIS
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No-decision in quality start
Schwellenbach came away with a no-decision in Saturday's 1-0 loss to the Padres. He allowed one hit and one walk while striking out four across six scoreless innings.
ANALYSIS
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Blanks Yanks in dominant start
Schwellenbach gave up two hits and a walk over six scoreless innings while striking out 10 in Wednesday's Grapefruit League game against the Yankees.
ANALYSIS
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Fans seven Nats on Friday
Schwellenbach gave up two runs on four hits over 4.2 innings in Friday's Grapefruit League game against the Nationals. He struck out seven without walking a batter.
ANALYSIS
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