2025 Stats
W-L
7-4
ERA
3.09
WHIP
0.97
K
108
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
Strikes out 12 in win
Schwellenbach (7-4) allowed one run on three hits and one walk while striking out 12 over seven innings to earn the win over Philadelphia on Saturday.
ANALYSIS
The 12 strikeouts are a season high for Schwellenbach, who continues to pitch deep into games for Atlanta. He's covered at least seven innings in seven of his last nine starts and in nine of 17 outings overall this season. He had some bumpy spots in June but allowed a modest 13 runs (12 earned) over 36 innings while maintaining a 37:6 K:BB for the month. Overall this year, he's at a 3.09 ERA, 0.97 WHIP and 108:18 K:BB through 110.2 innings. If Atlanta uses Monday's off day to skip the fifth spot in the rotation, Schwellenbach is tentatively lined up to make his next start at home versus the Angels on normal rest -- if that doesn't happen, he'll likely pitch during next weekend's home series against the Orioles.
The 12 strikeouts are a season high for Schwellenbach, who continues to pitch deep into games for Atlanta. He's covered at least seven innings in seven of his last nine starts and in nine of 17 outings overall this season. He had some bumpy spots in June but allowed a modest 13 runs (12 earned) over 36 innings while maintaining a 37:6 K:BB for the month. Overall this year, he's at a 3.09 ERA, 0.97 WHIP and 108:18 K:BB through 110.2 innings. If Atlanta uses Monday's off day to skip the fifth spot in the rotation, Schwellenbach is tentatively lined up to make his next start at home versus the Angels on normal rest -- if that doesn't happen, he'll likely pitch during next weekend's home series against the Orioles.
Pitching Stats
Loading Pitching Stats...
2025
2024
Minor League Game Log
Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Pitching Appearances Breakdown
Average Pitch Count
93
Last 10 Games
95
Last 5 Games
95
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
-15%
BAA vs RHP
2025
-8%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .239 | 101 | 30 | 108 | 18 | |||
| Since 2023vs Right | .204 | 134 | 11 | 87 | 9 | |||
| 2025vs Left | .225 | 46 | 14 | 49 | 11 | |||
| 2025vs Right | .208 | 62 | 4 | 40 | 2 | |||
| 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
-18%
ERA at Home
2025
-37%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 2.94 | 0.98 | 131.2 | 9.9 | 1.2 | ||||
| Since 2023Away | 3.59 | 1.04 | 102.2 | 7.9 | 2.0 | ||||
| 2025Home | 2.49 | 0.98 | 65.0 | 10.4 | 1.4 | ||||
| 2025Away | 3.94 | 0.94 | 45.2 | 6.5 | 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
6.00K/9
8.8BB/9
1.5HR/9
1.1Fastball
96.8 mphERA
3.09WHIP
0.97BABIP
.271GB/FB
1.82Left On Base
70.9%Exit Velocity
83.5 mphBarrels/BBE
4.8%Spin Rate
2189 rpmBalls Hit 95+ MPH
26.8%Swinging Strike
13.7%Prospect Rankings History
Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
Recent RotoWire Articles Featuring Spencer Schwellenbach See More
Strikeouts may be lower than usual, but there are still a number of pitchers more than capable of doing well this week.
Ryan Pohle dives into team stacks and pitchers for Monday's MLB slate, featuring Milwaukee's Chad Patrick in a favorable matchup against the Pirates.
Gear up for Mets vs Braves with Dan Dobish's best MLB player props and same-game parlay possibilities, including a look at Ozzie Albies' total bases prop.
Someone on Milwaukee's rotation is set for two very favorable home matchups.
Get the best MLB bets today as Michael Rathburn lines up his three MLB picks he's targeting, including a look at the total in the Braves vs Mets series opener.
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
Fires seven innings
Schwellenbach (6-4) yielded two runs on four hits and a walk over seven innings Monday, striking out four and earning a win against the Mets.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Punches out eight
Schwellenbach did not factor in the decision during Tuesday's win over the Mets. He allowed four runs on six hits and two walks while striking out eight across seven innings.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
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
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this 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
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
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
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.