Owing to the width of most of the many data tables on this site, it is best viewed from a desktop computer. If you are on a mobile device (phone or tablet), you will obtain a better viewing experience by rotating your device a quarter-turn (to get the so-called “panorama” screen view).
The Owlcroft Baseball-Analysis Site
Baseball team and player performance examined realistically and accurately.
(Click on any image above to see it at full size.)
Click here to search this site.
You can get a site directory by clicking on the “hamburger” icon (
) in the upper right of this page.
Or you can search this site with Google (standard Google-search rules apply).
Search term(s):
Jesse Hahn: Career Pitching
(Click here
Site Home Page
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]
Jesse Hahn: Personal Data
Name: Jesse Hahn
Jesse Hahn: Career Pitching
Through games of Monday, 23 June 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
2014
Padres
12
2
73.1
306
0.214
0.275
0.316
0.186
1.474
0.105
0.229
0.304
0.275
2.188
513
2.97
3.07
2015
Athletics
16
0
96.2
406
0.238
0.274
0.324
0.217
1.364
0.062
0.158
0.298
0.296
2.560
594
3.43
3.35
2016
Athletics
9
0
46.1
203
0.313
0.322
0.484
0.281
1.544
0.094
0.113
0.374
0.433
1.211
931
5.38
6.02
2017
Athletics
13
1
69.2
316
0.283
0.332
0.402
0.247
1.423
0.085
0.174
0.342
0.351
2.037
924
5.34
5.30
2019
Royals
0
6
4.2
27
0.333
0.462
0.571
0.259
1.714
0.222
0.259
0.481
0.444
1.167
1869
10.81
13.50
2020
Royals
0
18
17.1
65
0.071
0.108
0.089
0.062
1.250
0.123
0.292
0.200
0.077
2.375
124
0.72
0.52
2021
Royals
0
5
3.1
19
0.357
0.333
0.786
0.263
2.200
0.211
0.158
0.526
0.579
0.750
2254
13.03
13.50
2025
Mariners
0
3
5.0
25
0.333
0.357
0.500
0.240
1.500
0.200
0.120
0.480
0.360
0.600
1029
5.95
5.40
Career
All
50
35
314.0
1367
0.251
0.293
0.366
0.221
1.457
0.092
0.178
0.326
0.322
1.937
702
4.06
4.27
For explanations of unconventional stats, see the Baseball Stats Definitions
All content copyright © 2002 - 2025 by
The Owlcroft Company .
This web page is strictly compliant with the WHATWG
(Web Hypertext Application Technology Working Group)
HyperText Markup Language (HTML5) Protocol
versionless “Living Standard”
and the W3C
(World Wide Web Consortium)
Cascading Style Sheets (CSS3) Protocol
v3
— because we care about interoperability. Click on the logos below to test us!
) in the upper right of this page.