1883 MLB Season Leaders
2 leagues · 98 team games · 44 ranking tables
Awards
None of these awards existed yet. The earliest award in this database is from 1911, so a 1883 season has no award to show. That is a fact about the calendar, not about the players on this page.
National League
Led the National League — the first row of every table below.
Batting12 categories
RunsR
| 1 | Joe Hornung | 107 |
|---|---|---|
| 2 | George Gore | 105 |
| 3 | Jim O'Rourke | 102 |
| 4 | Ezra Sutton | 101 |
| 5 | Paul Hines | 94 |
| 6 | Jack Farrell | 92 |
| 6 | King Kelly | 92 |
| 8 | Buck Ewing | 90 |
| 9 | Dan Brouthers | 85 |
| 10 | John Morrill | 83 |
| 10 | Ed Williamson | 83 |
HitsH
| 1 | Dan Brouthers | 159 |
|---|---|---|
| 2 | Roger Connor | 146 |
| 3 | Jim O'Rourke | 143 |
| 4 | Ezra Sutton | 134 |
| 5 | George Wood | 133 |
| 6 | Jack Burdock | 132 |
| 6 | Paul Hines | 132 |
| 8 | George Gore | 131 |
| 9 | Fred Dunlap | 129 |
| 9 | Patrick Gillespie | 129 |
| 9 | John Morrill | 129 |
Doubles2B
| 1 | Ed Williamson | 49 |
|---|---|---|
| 2 | Dan Brouthers | 41 |
| 3 | Tom Burns | 37 |
| 4 | Cap Anson | 36 |
| 5 | Charlie Bennett | 34 |
| 5 | Fred Dunlap | 34 |
| 5 | Hardy Richardson | 34 |
| 8 | John Morrill | 33 |
| 9 | Paul Hines | 32 |
| 10 | Jack Manning | 31 |
Triples3B
| 1 | Dan Brouthers | 17 |
|---|---|---|
| 2 | John Morrill | 16 |
| 3 | Roger Connor | 15 |
| 3 | Ezra Sutton | 15 |
| 5 | Buck Ewing | 13 |
| 5 | Joe Hornung | 13 |
| 7 | Patrick Gillespie | 12 |
| 7 | Sadie Houck | 12 |
| 9 | Jack Farrell | 11 |
| 9 | George Wood | 11 |
Home RunsHR
| 1 | Buck Ewing | 10 |
|---|---|---|
| 2 | Jerry Denny | 8 |
| 2 | Joe Hornung | 8 |
| 4 | John Ward | 7 |
| 5 | John Morrill | 6 |
| 6 | Charlie Bennett | 5 |
| 6 | Jack Burdock | 5 |
| 6 | Jim Whitney | 5 |
| 6 | George Wood | 5 |
| 10 | Fred Dunlap | 4 |
| 10 | Paul Hines | 4 |
| 10 | Sam Wise | 4 |
Runs Batted InRBI
| 1 | Dan Brouthers | 97 |
|---|---|---|
| 2 | Jack Burdock | 88 |
| 3 | Ezra Sutton | 73 |
| 4 | Cap Anson | 68 |
| 4 | John Morrill | 68 |
| 6 | Tom Burns | 67 |
| 7 | Joe Hornung | 66 |
| 8 | Patrick Gillespie | 62 |
| 9 | Jack Farrell | 61 |
| 9 | King Kelly | 61 |
WalksBB
| 1 | Tom York | 37 |
|---|---|---|
| 2 | Ned Hanlon | 34 |
| 3 | Martin Powell | 28 |
| 4 | George Gore | 27 |
| 4 | Orator Shafer | 27 |
| 6 | Charlie Bennett | 26 |
| 6 | Barney Gilligan | 26 |
| 8 | Roger Connor | 25 |
| 8 | Jim Whitney | 25 |
| 8 | George Wood | 25 |
Wins Above ReplacementWAR
| 1 | Dan Brouthers | 5.0 |
|---|---|---|
| 2 | George Gore | 4.3 |
| 3 | Hardy Richardson | 4.2 |
| 4 | Roger Connor | 4.2 |
| 5 | George Wood | 4.1 |
| 6 | Fred Dunlap | 4.0 |
| 7 | Buck Ewing | 3.8 |
| 8 | Charlie Bennett | 3.7 |
| 9 | Jack Farrell | 3.6 |
| 10 | Tom Burns | 3.5 |
Batting Averagemin 304 PA
| 1 | Dan Brouthers | .374 |
|---|---|---|
| 2 | Roger Connor | .357 |
| 3 | George Gore | .334 |
| 4 | Jack Burdock | .330 |
| 5 | Jim O'Rourke | .328 |
| 6 | Fred Dunlap | .326 |
| 7 | Ezra Sutton | .324 |
| 8 | John Morrill | .319 |
| 9 | Patrick Gillespie | .314 |
| 10 | Hardy Richardson | .311 |
On-Base Percentagemin 304 PA
| 1 | Dan Brouthers | .397 |
|---|---|---|
| 2 | Roger Connor | .394 |
| 3 | George Gore | .377 |
| 4 | Fred Dunlap | .361 |
| 5 | Jack Burdock | .353 |
| 6 | Charlie Bennett | .350 |
| 6 | Jim O'Rourke | .350 |
| 6 | Ezra Sutton | .350 |
| 9 | Hardy Richardson | .347 |
| 10 | John Morrill | .344 |
Slugging Percentagemin 304 PA
| 1 | Dan Brouthers | .572 |
|---|---|---|
| 2 | John Morrill | .525 |
| 3 | Roger Connor | .506 |
| 4 | Ezra Sutton | .486 |
| 5 | Buck Ewing | .481 |
| 6 | Jack Burdock | .475 |
| 7 | Charlie Bennett | .474 |
| 8 | George Gore | .472 |
| 9 | Fred Dunlap | .452 |
| 10 | Joe Hornung | .446 |
On-Base Plus Sluggingmin 304 PA
| 1 | Dan Brouthers | .969 |
|---|---|---|
| 2 | Roger Connor | .900 |
| 3 | John Morrill | .868 |
| 4 | George Gore | .849 |
| 5 | Ezra Sutton | .836 |
| 6 | Jack Burdock | .828 |
| 7 | Charlie Bennett | .825 |
| 8 | Buck Ewing | .820 |
| 9 | Fred Dunlap | .813 |
| 10 | Jim O'Rourke | .788 |
Pitching10 categories
WinsW
| 1 | Old Hoss Radbourn | 48 |
|---|---|---|
| 2 | Pud Galvin | 46 |
| 3 | Jim Whitney | 37 |
| 4 | Larry Corcoran | 34 |
| 5 | Jim McCormick | 28 |
| 6 | Charlie Buffinton | 25 |
| 6 | Fred Goldsmith | 25 |
| 6 | Mickey Welch | 25 |
| 9 | Hugh Daily | 23 |
| 10 | George Weidman | 20 |
SavesSV
| 1 | Jim Whitney | 2 |
|---|---|---|
| 1 | George Weidman | 2 |
| 3 | Cap Anson | 1 |
| 3 | Charlie Buffinton | 1 |
| 3 | Hugh Daily | 1 |
| 3 | George Derby | 1 |
| 3 | Jim McCormick | 1 |
| 3 | Jim O'Rourke | 1 |
| 3 | Old Hoss Radbourn | 1 |
StrikeoutsSO
| 1 | Jim Whitney | 345 |
|---|---|---|
| 2 | Old Hoss Radbourn | 315 |
| 3 | Pud Galvin | 279 |
| 4 | Larry Corcoran | 216 |
| 5 | Charlie Buffinton | 188 |
| 6 | George Weidman | 183 |
| 7 | Hugh Daily | 171 |
| 8 | John Coleman | 159 |
| 9 | Jim McCormick | 145 |
| 10 | Mickey Welch | 144 |
Innings PitchedIP
| 1 | Pud Galvin | 656.3 |
|---|---|---|
| 2 | Old Hoss Radbourn | 632.3 |
| 3 | John Coleman | 538.3 |
| 4 | Jim Whitney | 514.0 |
| 5 | Larry Corcoran | 473.7 |
| 6 | Mickey Welch | 426.0 |
| 7 | George Weidman | 402.3 |
| 8 | Fred Goldsmith | 383.3 |
| 9 | Hugh Daily | 378.7 |
| 10 | Jim McCormick | 342.0 |
Complete GamesCG
| 1 | Pud Galvin | 72 |
|---|---|---|
| 2 | Old Hoss Radbourn | 66 |
| 3 | John Coleman | 59 |
| 4 | Jim Whitney | 54 |
| 5 | Larry Corcoran | 51 |
| 6 | Mickey Welch | 46 |
| 7 | George Weidman | 41 |
| 8 | Hugh Daily | 40 |
| 8 | Fred Goldsmith | 40 |
| 10 | Jim McCormick | 36 |
ShutoutsSHO
Wins Above ReplacementWAR
| 1 | Pud Galvin | 20.1 |
|---|---|---|
| 2 | Old Hoss Radbourn | 20.0 |
| 3 | Jim Whitney | 18.0 |
| 4 | Larry Corcoran | 13.7 |
| 5 | John Coleman | 13.5 |
| 6 | George Weidman | 10.9 |
| 7 | Mickey Welch | 10.6 |
| 8 | Charlie Buffinton | 10.3 |
| 9 | Hugh Daily | 9.7 |
| 10 | Jim McCormick | 9.7 |
Earned Run Averagemin 98 IP
| 1 | Jim McCormick | 1.84 |
|---|---|---|
| 2 | Old Hoss Radbourn | 2.05 |
| 3 | Jim Whitney | 2.24 |
| 4 | Will Sawyer | 2.36 |
| 5 | Hugh Daily | 2.42 |
| 6 | Larry Corcoran | 2.49 |
| 7 | Dupee Shaw | 2.50 |
| 8 | John Ward | 2.70 |
| 9 | Pud Galvin | 2.71 |
| 10 | Mickey Welch | 2.73 |
Walks and Hits per Inningmin 98 IP
| 1 | Old Hoss Radbourn | 0.98 |
|---|---|---|
| 2 | Jim Whitney | 1.02 |
| 3 | Pud Galvin | 1.11 |
| 4 | Jim McCormick | 1.11 |
| 5 | John Ward | 1.12 |
| 6 | Charlie Sweeney | 1.16 |
| 7 | Mickey Welch | 1.17 |
| 8 | Will Sawyer | 1.18 |
| 9 | Jack Jones | 1.18 |
| 10 | Charlie Buffinton | 1.19 |
Fielding Independent Pitchingmin 98 IP
| 1 | Jim Whitney | 2.29 |
|---|---|---|
| 2 | Old Hoss Radbourn | 2.67 |
| 3 | Charlie Buffinton | 2.74 |
| 4 | Pud Galvin | 2.81 |
| 5 | John Ward | 2.85 |
| 6 | Jim McCormick | 3.01 |
| 7 | Jack Jones | 3.04 |
| 8 | Larry Corcoran | 3.05 |
| 9 | George Weidman | 3.14 |
| 10 | Will Sawyer | 3.27 |
Other leagues
Led the Other leagues — the first row of every table below.
Batting12 categories
RunsR
| 1 | Harry Stovey | 110 |
|---|---|---|
| 2 | John Reilly | 103 |
| 3 | Hick Carpenter | 99 |
| 4 | Lon Knight | 98 |
| 5 | Jud Birchall | 95 |
| 5 | Pete Browning | 95 |
| 7 | Mike Mansell | 90 |
| 7 | Mike Moynahan | 90 |
| 9 | Charlie Comiskey | 87 |
| 10 | Arlie Latham | 86 |
| 10 | Ed Swartwood | 86 |
HitsH
| 1 | Ed Swartwood | 147 |
|---|---|---|
| 2 | John Reilly | 136 |
| 3 | Hick Carpenter | 130 |
| 4 | Harry Stovey | 128 |
| 5 | Candy Nelson | 127 |
| 6 | Jim Clinton | 125 |
| 7 | Mike Moynahan | 124 |
| 8 | Bill Gleason | 122 |
| 9 | Pete Browning | 121 |
| 10 | Charlie Comiskey | 118 |
Doubles2B
| 1 | Harry Stovey | 31 |
|---|---|---|
| 2 | Ed Swartwood | 24 |
| 3 | Jackie Hayes | 23 |
| 3 | Lon Knight | 23 |
| 5 | Bill Gleason | 21 |
| 5 | John Reilly | 21 |
| 7 | Candy Nelson | 19 |
| 7 | John O'Rourke | 19 |
| 9 | Hick Carpenter | 18 |
| 9 | Fred Mann | 18 |
| 9 | Mike Moynahan | 18 |
Triples3B
| 1 | Pop Smith | 17 |
|---|---|---|
| 2 | Bill Kuehne | 14 |
| 2 | John Reilly | 14 |
| 4 | Fred Mann | 13 |
| 4 | Mike Mansell | 13 |
| 6 | Charley Jones | 12 |
| 7 | Bid McPhee | 10 |
| 7 | Mike Moynahan | 10 |
| 7 | Jack O'Brien | 10 |
| 10 | Pete Browning | 9 |
| 10 | Charlie Comiskey | 9 |
| 10 | George Creamer | 9 |
| 10 | Joe Gerhardt | 9 |
| 10 | Bill Gleason | 9 |
| 10 | Tim Keefe | 9 |
| 10 | Lon Knight | 9 |
| 10 | Dan Stearns | 9 |
| 10 | Chicken Wolf | 9 |
Home RunsHR
| 1 | Harry Stovey | 14 |
|---|---|---|
| 2 | Charley Jones | 10 |
| 3 | John Reilly | 9 |
| 4 | Tom Brown | 5 |
| 4 | Charles Fulmer | 5 |
| 6 | Pete Browning | 4 |
| 6 | Pop Smith | 4 |
| 8 | Hick Carpenter | 3 |
| 8 | Jackie Hayes | 3 |
| 8 | Jack Leary | 3 |
| 8 | Mike Mansell | 3 |
| 8 | Frank Mountain | 3 |
| 8 | Joe Sommer | 3 |
| 8 | Ed Swartwood | 3 |
Runs Batted InRBI
| 1 | Charley Jones | 80 |
|---|---|---|
| 2 | John Reilly | 79 |
| 3 | Jack O'Brien | 70 |
| 4 | Mike Moynahan | 67 |
| 5 | Harry Stovey | 66 |
| 6 | Charlie Comiskey | 64 |
| 7 | Lon Knight | 53 |
| 8 | Charles Fulmer | 52 |
| 8 | Joe Sommer | 52 |
| 10 | Fred Lewis | 51 |
WalksBB
| 1 | Dan Stearns | 34 |
|---|---|---|
| 2 | Mike Moynahan | 31 |
| 2 | Candy Nelson | 31 |
| 4 | Jack Gleason | 29 |
| 5 | Jim Clinton | 27 |
| 5 | Harry Stovey | 27 |
| 7 | Mike Mansell | 25 |
| 7 | Jack O'Brien | 25 |
| 7 | John Richmond | 25 |
| 7 | Ed Swartwood | 25 |
Wins Above ReplacementWAR
| 1 | Ed Swartwood | 4.2 |
|---|---|---|
| 2 | Pop Smith | 3.5 |
| 3 | Pete Browning | 3.2 |
| 4 | Harry Stovey | 3.1 |
| 5 | John Richmond | 3.1 |
| 6 | Charley Jones | 3.0 |
| 7 | Mike Moynahan | 2.7 |
| 8 | Jim Clinton | 2.5 |
| 9 | John Reilly | 2.4 |
| 10 | Hick Carpenter | 2.3 |
Batting Averagemin 304 PA
| 1 | Ed Swartwood | .357 |
|---|---|---|
| 2 | Pete Browning | .338 |
| 3 | Jim Clinton | .313 |
| 4 | John Reilly | .311 |
| 5 | Mike Moynahan | .310 |
| 6 | Candy Nelson | .305 |
| 7 | Harry Stovey | .304 |
| 8 | Hick Carpenter | .299 |
| 9 | Charlie Comiskey | .294 |
| 9 | Charley Jones | .294 |
On-Base Percentagemin 304 PA
| 1 | Ed Swartwood | .394 |
|---|---|---|
| 2 | Pete Browning | .378 |
| 3 | Mike Moynahan | .360 |
| 4 | Jim Clinton | .357 |
| 5 | Candy Nelson | .353 |
| 6 | Harry Stovey | .346 |
| 7 | Jack Gleason | .342 |
| 8 | Jack O'Brien | .333 |
| 9 | Hick Carpenter | .328 |
| 9 | Charley Jones | .328 |
Slugging Percentagemin 304 PA
| 1 | Harry Stovey | .506 |
|---|---|---|
| 2 | John Reilly | .485 |
| 3 | Ed Swartwood | .476 |
| 4 | Charley Jones | .471 |
| 5 | Pete Browning | .464 |
| 6 | Mike Moynahan | .413 |
| 7 | Pop Smith | .410 |
| 8 | Charlie Comiskey | .397 |
| 9 | Jim Clinton | .393 |
| 9 | Bill Gleason | .393 |
On-Base Plus Sluggingmin 304 PA
| 1 | Ed Swartwood | .869 |
|---|---|---|
| 2 | Harry Stovey | .852 |
| 3 | Pete Browning | .842 |
| 4 | John Reilly | .810 |
| 5 | Charley Jones | .799 |
| 6 | Mike Moynahan | .772 |
| 7 | Jim Clinton | .750 |
| 8 | Candy Nelson | .732 |
| 9 | Charlie Comiskey | .710 |
| 9 | Pop Smith | .710 |
Pitching10 categories
WinsW
| 1 | Will White | 43 |
|---|---|---|
| 2 | Tim Keefe | 41 |
| 3 | Tony Mullane | 35 |
| 4 | Bobby Mathews | 30 |
| 5 | Guy Hecker | 28 |
| 5 | Jumbo McGinnis | 28 |
| 7 | Frank Mountain | 26 |
| 8 | Sam Weaver | 24 |
| 9 | Denny Driscoll | 18 |
| 10 | George Bradley | 16 |
SavesSV
| 1 | Bob Barr | 1 |
|---|---|---|
| 1 | Tony Mullane | 1 |
StrikeoutsSO
| 1 | Tim Keefe | 359 |
|---|---|---|
| 2 | Bobby Mathews | 203 |
| 3 | Tony Mullane | 191 |
| 4 | Guy Hecker | 164 |
| 5 | Frank Mountain | 159 |
| 6 | Hardie Henderson | 147 |
| 7 | Will White | 141 |
| 8 | Jumbo McGinnis | 128 |
| 9 | Jack Lynch | 119 |
| 10 | Sam Weaver | 105 |
Innings PitchedIP
| 1 | Tim Keefe | 619.0 |
|---|---|---|
| 2 | Will White | 577.0 |
| 3 | Frank Mountain | 503.0 |
| 4 | Guy Hecker | 469.0 |
| 5 | Tony Mullane | 460.7 |
| 6 | Sam Weaver | 400.7 |
| 7 | Jumbo McGinnis | 382.7 |
| 8 | Bobby Mathews | 381.0 |
| 9 | Hardie Henderson | 367.3 |
| 10 | Denny Driscoll | 336.3 |
Complete GamesCG
| 1 | Tim Keefe | 68 |
|---|---|---|
| 2 | Will White | 64 |
| 3 | Frank Mountain | 57 |
| 4 | Guy Hecker | 51 |
| 5 | Tony Mullane | 49 |
| 6 | Sam Weaver | 45 |
| 7 | Bobby Mathews | 41 |
| 7 | Jumbo McGinnis | 41 |
| 9 | Hardie Henderson | 39 |
| 10 | Denny Driscoll | 35 |
ShutoutsSHO
| 1 | Jumbo McGinnis | 6 |
|---|---|---|
| 1 | Will White | 6 |
| 3 | Tim Keefe | 5 |
| 4 | Frank Mountain | 4 |
| 4 | Sam Weaver | 4 |
| 6 | Guy Hecker | 3 |
| 6 | Tony Mullane | 3 |
| 8 | Ren Deagle | 1 |
| 8 | Denny Driscoll | 1 |
| 8 | Bob Emslie | 1 |
| 8 | Jack Lynch | 1 |
| 8 | Bobby Mathews | 1 |
| 8 | Harry McCormick | 1 |
Wins Above ReplacementWAR
| 1 | Tim Keefe | 19.7 |
|---|---|---|
| 2 | Tony Mullane | 13.6 |
| 3 | Will White | 12.8 |
| 4 | Guy Hecker | 12.2 |
| 5 | Bobby Mathews | 11.9 |
| 6 | Frank Mountain | 11.2 |
| 7 | Sam Weaver | 10.6 |
| 8 | Jumbo McGinnis | 10.5 |
| 9 | Hardie Henderson | 9.7 |
| 10 | Denny Driscoll | 8.8 |
Earned Run Averagemin 98 IP
| 1 | Will White | 2.09 |
|---|---|---|
| 2 | Tony Mullane | 2.19 |
| 3 | Ren Deagle | 2.31 |
| 4 | Jumbo McGinnis | 2.33 |
| 5 | Tim Keefe | 2.41 |
| 6 | Bobby Mathews | 2.46 |
| 7 | Harry McCormick | 2.87 |
| 8 | George Bradley | 3.15 |
| 9 | Bob Emslie | 3.17 |
| 10 | Guy Hecker | 3.34 |
Walks and Hits per Inningmin 98 IP
| 1 | Tim Keefe | 0.96 |
|---|---|---|
| 2 | Tony Mullane | 0.97 |
| 3 | Will White | 1.00 |
| 4 | Jumbo McGinnis | 1.03 |
| 5 | George Bradley | 1.11 |
| 6 | Bobby Mathews | 1.12 |
| 7 | Jack Lynch | 1.13 |
| 8 | Bob Emslie | 1.14 |
| 9 | Ren Deagle | 1.15 |
| 10 | Sam Weaver | 1.21 |
Fielding Independent Pitchingmin 98 IP
| 1 | Tim Keefe | 2.74 |
|---|---|---|
| 2 | Bobby Mathews | 2.81 |
| 3 | Jack Lynch | 2.92 |
| 4 | Tony Mullane | 2.99 |
| 5 | Sam Weaver | 3.09 |
| 6 | Guy Hecker | 3.14 |
| 7 | Bob Barr | 3.19 |
| 8 | Jumbo McGinnis | 3.23 |
| 9 | Denny Driscoll | 3.25 |
| 10 | Ren Deagle | 3.29 |
How this page is built
The qualifying line for 1883 is 304 plate appearances and 98 innings pitched. It comes from the length of the schedule — 98 games per team, measured from the season files themselves — at the official rate of 3.1 plate appearances and one inning per team game. Batting average, on-base, slugging, OPS, earned run average and WHIP all use it; a player who came to the plate twice and got two hits does not appear at the top of the batting average table, which is exactly what that line is for. Counting statistics such as home runs and strikeouts have no minimum, because none is needed.
How the rankings were made
Wins above replacement in these tables is ours rather than the source database's, so it will not match a published figure exactly. Also: why every ranking stops at one league, and why some categories are missing on purpose.
How the rankings were made
Wins above replacement in these tables is ours rather than the source database's, so it will not match a published figure exactly. Also: why every ranking stops at one league, and why some categories are missing on purpose.
Every ranking on this page is worked out inside one league. 1883 is counted as 2 separate leagues — National League and Other leagues, and a player is ranked only against the men in his own. Leading the American League and leading baseball are different claims, and the one we can make from these files is the first. There is no combined table anywhere on this page, because adding two leagues together would produce a number that no record book recognises.
There are 44 ranking tables here, 18 places deep. Players tied on a value share a place, so a table can run past ten rows when the tenth spot is shared, and a league with fewer than ten qualified players in a category is left out rather than shown as a top ten that is not one. A player who did none of the thing is not ranked in it either — a shutout table lists the pitchers who threw one, not the hundreds who threw none tied on zero. Some categories are missing on purpose: nobody leads a league in strikeouts at the plate, in losses, or in home runs allowed. A ranking is meant to mark an achievement, so only achievements are ranked.
Wins above replacement on this page is ours, not the source database's. The hitting and pitching files carry a WAR column that we compute here from the same season lines you see, using park factors and a run environment worked out per season. Published versions elsewhere use different methods and will not match ours exactly. Every other column is the record as the database supplies it.
Names on this page lead to that player's own record. Most of them open a full career page with every season he appeared in. Some open a summary screen instead — we pre-build pages for the players people look for, and everyone else is assembled on demand from the same files, so the numbers are identical either way even though the address looks different.
Data for 1871 to 2025: Lahman Baseball Database 2025, compiled by SABR (Society for American Baseball Research) and licensed under CC BY-SA 3.0 Unported. Negro Leagues data licensed from Seamheads.com and included under SABR major-league recommendations (2021-02-11, 2024-06-03). This page ranks the 1883 season lines published on this site, league by league, with WAR worked out here. — the WAR columns are computed here — and they are published under the same CC BY-SA 3.0 Unported licence, as ShareAlike requires. That database is published once a season is complete, so the 2026 figures on this site come from a different place: the MLB Stats API, whose notice reads “Copyright 2026 MLB Advanced Media, L.P. Use of any content on this page acknowledges agreement to the terms posted here http://gdx.mlb.com/components/copyright.txt”. Those numbers are MLB Advanced Media, L.P.’s, not SABR (Society for American Baseball Research)’s, and they carry that notice rather than the CC BY-SA 3.0 Unported licence above. Not affiliated with, endorsed by, or connected to Major League Baseball or any of its clubs.