2025 Stats
W-L
1-1
ERA
2.56
WHIP
0.92
K
27
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
Fans six in loss
Schwellenbach (1-2) yielded four runs (three earned) on seven hits and a walk over six innings Sunday, striking out six and taking a loss against Arizona.
ANALYSIS
Schwellenbach never found a groove Sunday, coughing up a run in each of the first, second, fourth and fifth innings. He tossed 58 of 88 pitches for strikes and generated 16 whiffs, including six each with the slider and splitter. After allowing only one run through 20 innings to start his 2025 campaign, Schwellenbach has been tagged with 13 runs (11 earned) over his last 17.2 frames. He still owns a strong 2.87 ERA with a 33:6 K:BB. Schwellenbach is expected to face the Dodgers at home next weekend.
Schwellenbach never found a groove Sunday, coughing up a run in each of the first, second, fourth and fifth innings. He tossed 58 of 88 pitches for strikes and generated 16 whiffs, including six each with the slider and splitter. After allowing only one run through 20 innings to start his 2025 campaign, Schwellenbach has been tagged with 13 runs (11 earned) over his last 17.2 frames. He still owns a strong 2.87 ERA with a 33:6 K:BB. Schwellenbach is expected to face the Dodgers at home next weekend.
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
-23%
BAA vs RHP
2025
-33%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .250 | 69 | 19 | 75 | 10 | |||
| Since 2023vs Right | .193 | 85 | 9 | 55 | 7 | |||
| 2025vs Left | .239 | 14 | 3 | 16 | 3 | |||
| 2025vs Right | .160 | 13 | 2 | 8 | 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
-20%
ERA at Home
2025
-75%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 2.87 | 0.96 | 87.2 | 9.2 | 1.0 | ||||
| Since 2023Away | 3.59 | 1.09 | 67.2 | 8.5 | 2.4 | ||||
| 2025Home | 1.29 | 0.90 | 21.0 | 8.6 | 0.9 | ||||
| 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
5.40K/9
7.7BB/9
1.4HR/9
0.9Fastball
96.4 mphERA
2.56WHIP
0.92BABIP
.252GB/FB
2.32Left On Base
76.6%Exit Velocity
82.4 mphBarrels/BBE
3.6%Spin Rate
2192 rpmBalls Hit 95+ MPH
23.6%Swinging Strike
13.5%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 Spencer Schwellenbach See More
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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
Bounces back with quality start
Schwellenbach tossed seven innings in a no-decision against St. Louis on Monday, allowing three runs (two earned) on eight hits and no walks while striking out five batters.
ANALYSIS
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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
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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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