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Baseball team and player performance examined realistically and accurately.
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Erik Swanson: Career Pitching
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Background:
For You Rookies Here Some Baseball Analysis Theory The Games-Won Formula About the Team-Performance Table The “Quality of Pitching” Measure Fielding and Defense in Baseball Baseball Stat Definitions Baseball Data Normalization [scroll down for more links, or click the big “X” to exit]
Teams:
The Main Team-Performance Table Set By-Team Performance by Players & Pitchers
All-Teams Table: Win Expectations From Player Career Stats All-Teams Table: Defense [scroll up or down for more links, or click the big “X” to exit]
Position Players:
Sorted by Performance:
Sorted by Name:
In Performance Order by Position(s) Played, Current Season:
Alphabetically by Position(s) Played, Current Season:
In Performance Order by Position(s) Played, Career:
Alphabetically by Position(s) Played, Career:
Frequent-Use Position Players, by performance Frequent-Use Position Players, by name [scroll up or down for more links, or click the big “X” to exit]
Pitchers:
Sorted by Performance:
Sorted by Name:
In Performance Order by Role, Current Season:
Alphabetically by Role, Current Season:
In Performance Order by Role, Career:
Alphabetically by Role, Career:
Frequent-Use Starters and Relievers, by performance Frequent-Use Starters and Relievers, by name [scroll up or down for more links, or click the big “X” to exit]
Miscellaneous:
The Owlcroft Baseball-Analysis Formulae Tested The Owlcroft “TOP” Formula: Tabulated Data Calculating the Effects of Fielding on Wins Making Optimum Use of Players and Pitchers About Owlcroft Links About Eric Walker Links To A Select Few Other Useful Baseball Sites Steroids and Baseball [external site] The Juiced Ball [scroll up or down for more links, or click the big “X” to exit]
Book:
About Buying Books On Line Some Selected Baseball Books [scroll up for more links, or click the big “X” to exit]
Erik Swanson: Personal Data
Name: Erik Swanson
Erik Swanson: Career Pitching
Through games of Sunday, 28 September 2025.true, unadjusted data.
Handedness Key: + R * L # S
(You can also look up the stat definitions .)
— Place your cursor over any column heading to see what it signifies. —
Year
Team
GS
GR
IP
BFP
BA
BABIP
SA
HA
PF
BBA
KA
OBA
TBA
K/W
TPP
QofP
ERA
2019
Mariners
8
19
58.0
245
0.243
0.241
0.517
0.229
2.125
0.049
0.212
0.286
0.486
4.333
904
5.23
5.74
2020
Mariners
0
9
7.2
37
0.344
0.381
0.688
0.297
2.000
0.054
0.243
0.405
0.595
4.500
1539
8.90
12.91
2021
Mariners
2
31
35.1
144
0.212
0.247
0.402
0.194
1.893
0.069
0.243
0.271
0.368
3.500
631
3.65
3.31
2022
Mariners
1
56
53.2
206
0.202
0.300
0.290
0.189
1.436
0.049
0.340
0.243
0.272
7.000
338
1.95
1.68
2023
Blue Jays
0
69
66.2
262
0.217
0.280
0.358
0.198
1.654
0.080
0.286
0.279
0.328
3.571
497
2.87
2.97
2024
Blue Jays
0
45
39.1
168
0.235
0.238
0.516
0.214
2.194
0.083
0.220
0.304
0.470
2.643
873
5.05
5.03
2025
Blue Jays
0
6
5.1
30
0.364
0.316
0.773
0.267
2.125
0.167
0.100
0.467
0.567
0.600
2494
14.42
15.19
Career
All
11
235
266.0
1092
0.230
0.267
0.431
0.211
1.878
0.068
0.257
0.286
0.396
3.797
684
3.95
4.20
For explanations of unconventional stats, see the Baseball Stats Definitions
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