Baseball Player Won-Lost Records



Games and Seasons for which Player Won-Lost Records are Calculated

Last updated December 27, 2014

At present, Player won-lost records are available for the following seasons. Seasons in bold are missing some games.

1922, 1925, 1927, 1931
1934 - 1947
1948 - 2014
Most Recent Updates to Player Won-Lost records

Player won-lost records are calculated using play-by-play data. The source of this play-by-play data is Retrosheet. Retrosheet released its most recent set of play-by-play data on December 14, 2014.

This release included full play-by-play data for the 2014 season, the release of deduced games to complete the 1948 season, the release of partial data for the 1925 and 1936 seasons for the first time, as well as additional data for several earlier seasons. Excluding the entirely new seasons - 1925, 1936, and 2014 - and the newly-completed 1948 season, Retrosheet has released play-by-play data for an additional 909 games for various seasons prior to 1948 (including all seasons, Retrosheet released play-by-play data for 5,362 new games as part of its latest release).

These data have all now been incorporated into my Player won-lost records. In addition to new play-by-play data, Retrosheet has also updated and improved the play-by-play data for many games. This includes the "promotion" of a number of games from deduced accounts to "event files" (see below for a further discussion of this distinction). To attempt to incorporate as much of this new information as possible, I have updated the Player won-lost records for all seasons prior to 1958 as well as the 1967 season (where some deduced games appear to have been "promoted" to "event file" status).

For seasons with missing data, teams are missing the following numbers of games. Team records in missing games are shown in parentheses (W-L-T).

1947

American League
Boston 35(23-10-2)
Chicago 45(17-27-1)
Cleveland 0
Detroit 55(33-22-0)
New York 10(6-4-0)
Philadelphia 34(20-13-1)
St. Louis 49(15-34-0)
Washington 22(9-13-0)


National League

Boston 27(15-12-0)
Brooklyn 0
Chicago 22(8-13-1)
Cincinnati 0
New York 21(8-13-0)
Philadelphia 34(18-15-1)
Pittsburgh 15(3-12-0)
St. Louis 39(26-13-0)


1946

American League

Boston 80(56-22-2)
Chicago 89(40-49-0)
Cleveland 60(27-32-1)
Detroit 76(42-33-1)
New York 60(32-28-0)
Philadelphia 78(25-52-1)
St. Louis 91(41-48-2)
Washington 76(38-37-1)


National League

Boston 47(27-19-1)
Brooklyn 3(3-0-0)
Chicago 50(25-24-1)
Cincinnati 0
New York 54(27-27-0)
Philadelphia 54(23-31-0)
Pittsburgh 45(18-27-0)
St. Louis 23(14-9-0)


1945

American League

Boston 103(44-58-1)
Chicago 114(58-55-1)
Cleveland 111(59-50-2)
Detroit 116(70-45-1)
New York 115(58-57-0)
Philadelphia 77(20-56-1)
St. Louis 109(61-48-0)
Washington 1(0-1-0)


National League

Boston 74(32-41-1)
Brooklyn 6(2-4-0)
Chicago 84(48-36-0)
Cincinnati 0
New York 24(12-11-1)
Philadelphia 65(19-46-0)
Pittsburgh 81(44-36-1)
St. Louis 74(45-28-1)


1944

American League

Boston 124(61-61-2)
Chicago 131(67-64-0)
Cleveland 131(61-69-1)
Detroit 127(70-55-2)
New York 83(47-36-0)
Philadelphia 77(29-47-1)
St. Louis 128(74-54-0)
Washington 135(56-79-0)


National League

Boston 76(32-44-0)
Brooklyn 5(4-1-0)
Chicago 91(41-49-1)
Cincinnati 1(1-0-0)
New York 51(21-30-0)
Philadelphia 53(23-30-0)
Pittsburgh 90(49-38-3)
St. Louis 79(49-28-2)


1943

American League

Boston 110(43-65-2)
Chicago 138(71-66-1)
Cleveland 121(66-55-0)
Detroit 137(68-68-1)
New York 63(42-21-0)
Philadelphia 86(28-57-1)
St. Louis 131(64-66-1)
Washington 120(68-52-0)


National League

Boston 93(41-52-0)
Brooklyn 6(3-3-0)
Chicago 116(54-61-1)
Cincinnati 96(58-38-0)
New York 114(37-76-1)
Philadelphia 92(41-49-2)
Pittsburgh 90(48-41-1)
St. Louis 105(71-33-1)


1942

American League

Boston 113(71-42-0)
Chicago 104(49-55-0)
Cleveland 34(11-23-0)
Detroit 113(53-60-0)
New York 33(24-9-0)
Philadelphia 78(30-48-0)
St. Louis 112(65-47-0)
Washington 109(45-64-0)


National League

Boston 104(44-58-2)
Brooklyn 0
Chicago 120(56-63-1)
Cincinnati 108(55-51-2)
New York 102(57-44-1)
Philadelphia 86(21-65-0)
Pittsburgh 98(46-49-3)
St. Louis 120(85-34-1)


1941

American League

Boston 72(44-28-0)
Chicago 100(48-50-2)
Cleveland 20(9-11-0)
Detroit 103(49-53-1)
New York 0
Philadelphia 64(30-34-0)
St. Louis 100(46-52-2)
Washington 101(51-49-1)


National League

Boston 123(55-68-0)
Brooklyn 0
Chicago 121(54-66-1)
Cincinnati 108(63-45-0)
New York 124(58-64-2)
Philadelphia 105(35-69-1)
Pittsburgh 103(59-43-1)
St. Louis 110(70-39-1)


1940

American League

Boston 103(57-46-0)
Chicago 106(63-43-0)
Cleveland 2(2-0-0)
Detroit 108(63-44-1)
New York 72(40-32-0)
Philadelphia 56(18-38-0)
St. Louis 109(45-63-1)
Washington 108(43-65-0)


National League

Boston 93(37-56-0)
Brooklyn 6(4-2-0)
Chicago 104(52-52-0)
Cincinnati 82(52-29-1)
New York 110(58-52-0)
Philadelphia 85(22-63-0)
Pittsburgh 91(55-35-1)
St. Louis 113(60-51-2)


1939

American League
Boston 62(40-22-0)
Chicago 57(34-23-0)
Cleveland 86(45-41-0)
Detroit 81(48-32-1)
New York 9(7-2-0)
Philadelphia 10(4-6-0)
St. Louis 83(21-61-1)
Washington 88(38-50-0)


National League

Boston 72(23-48-1)
Brooklyn 57(31-25-1)
Chicago 67(41-26-0)
Cincinnati 84(51-32-1)
New York 70(36-34-0)
Philadelphia 77(20-57-0)
Pittsburgh 66(29-37-0)
St. Louis 81(54-26-1)


1938

American League

Boston 61(38-23-0)
Chicago 62(27-34-1)
Cleveland 20(11-9-0)
Detroit 85(47-37-1)
New York 11(8-3-0)
Philadelphia 45(17-28-0)
St. Louis 76(29-45-2)
Washington 84(43-41-0)


National League

Boston 68(36-32-0)
Brooklyn 60(30-28-2)
Chicago 37(16-20-1)
Cincinnati 82(44-37-1)
New York 68(36-31-1)
Philadelphia 78(20-57-1)
Pittsburgh 80(52-26-2)
St. Louis 83(39-42-2)


1937

American League

Boston 40(13-25-2)
Chicago 24(17-7-0)
Cleveland 19(12-6-1)
Detroit 55(35-19-1)
New York 9(6-3-0)
Philadelphia 3(2-1-0)
St. Louis 37(7-29-1)
Washington 53(25-27-1)


National League

Boston 31(15-16-0)
Brooklyn 40(14-24-2)
Chicago 26(15-11-0)
Cincinnati 66(26-39-1)
New York 42(29-13-0)
Philadelphia 63(28-35-0)
Pittsburgh 20(12-8-0)
St. Louis 50(27-20-3)


1936

American League

Boston 27(9-18-0)
Chicago 31(17-12-2)
Cleveland 10(4-5-1)
Detroit 72(41-31-0)
New York 33(23-10-0)
Philadelphia 34(12-21-1)
St. Louis 79(30-47-2)
Washington 70(39-31-0)


National League

Boston 32(14-17-1)
Brooklyn 71(34-36-1)
Chicago 110(54-56-0)
Cincinnati 111(53-58-0)
New York 114(66-48-0)
Philadelphia 91(31-60-0)
Pittsburgh 118(60-57-1)
St. Louis 119(69-49-1)


1935

American League

Boston 91(44-47-0)
Chicago 78(33-44-1)
Cleveland 12(9-2-1)
Detroit 75(47-28-0)
New York 36(23-13-0)
Philadelphia 20(8-12-0)
St. Louis 96(40-55-1)
Washington 86(41-44-1)


National League

Boston 105(26-79-0)
Brooklyn 4(3-1-0)
Chicago 72(44-28-0)
Cincinnati 105(45-59-1)
New York 40(26-12-2)
Philadelphia 95(39-55-1)
Pittsburgh 94(55-39-0)
St. Louis 107(71-36-0)


1934

American League

Boston 67(29-37-1)
Chicago 43(14-29-0)
Cleveland 21(15-6-0)
Detroit 68(46-22-0)
New York 41(23-18-0)
Philadelphia 5(1-3-1)
St. Louis 65(32-32-1)
Washington 68(27-40-1)


National League

Boston 66(36-30-0)
Brooklyn 5(4-1-0)
Chicago 50(30-20-0)
Cincinnati 82(28-53-1)
New York 38(17-21-0)
Philadelphia 75(27-48-0)
Pittsburgh 87(52-35-0)
St. Louis 65(39-25-1)


1931

American League

Boston 45(17-27-1)
Chicago 31(11-19-1)
Cleveland 6(4-2-0)
Detroit 56(21-35-0)
New York 31(21-9-1)
Philadelphia 3(3-0-0)
St. Louis 42(20-22-0)
Washington 54(35-18-1)


National League

Boston 39(18-21-0)
Brooklyn 9(4-5-0)
Chicago 24(16-8-0)
Cincinnati 24(10-14-0)
New York 17(10-7-0)
Philadelphia 33(13-20-0)
Pittsburgh 10(3-7-0)
St. Louis 40(24-16-0)


1927

American League

Boston 55(15-40-0)
Chicago 24(13-11-0)
Cleveland 2(2-0-0)
Detroit 72(37-32-3)
New York 0
Philadelphia 39(23-16-0)
St. Louis 26(10-15-1)
Washington 56(34-20-2)


National League

Boston 49(19-30-0)
Brooklyn 41(18-22-1)
Chicago 25(16-9-0)
Cincinnati 68(40-28-0)
New York 34(21-12-1)
Philadelphia 53(14-38-1)
Pittsburgh 2(0-1-1)
St. Louis 30(21-9-0)


1925

American League

Boston 58(16-42-0)
Chicago 20(11-9-0)
Cleveland 3(0-3-0)
Detroit 68(36-31-1)
New York 24(3-20-1)
Philadelphia 17(13-4-0)
St. Louis 41(28-13-0)
Washington 71(43-28-0)


National League

Boston 36(12-24-0)
Brooklyn 0
Chicago 18(8-10-0)
Cincinnati 18(12-6-0)
New York 18(10-8-0)
Philadelphia 34(16-18-0)
Pittsburgh 0
St. Louis 32(20-12-0)


1922

American League

Boston 82(29-53-0)
Chicago 26(12-14-0)
Cleveland 10(6-4-0)
Detroit 88(50-37-1)
New York 19(13-6-0)
Philadelphia 56(21-34-1)
St. Louis 76(52-24-0)
Washington 87(38-49-0)


National League

Boston 61(20-41-0)
Brooklyn 22(10-11-1)
Chicago 10(6-4-0)
Cincinnati 63(38-25-0)
New York 19(13-5-1)
Philadelphia 49(19-30-0)
Pittsburgh 0
St. Louis 68(39-29-0)


Deduced Games

For games for which Retrosheet is unable to find play-by-play data, they have begun to construct what they call "deduced" games. These are play-by-play accounts which are constructed based on box score data and newspaper stories. In many cases, the resulting games are "plausible" but not necessarily unique. That is, there may be some uncertainty, for example, as to whether a particular batter singled in the first or third inning of a game.

Retrosheet distinguishes between what it calls "event files" - which consist exclusively (or, at least, almost exclusively) of known play-by-play events - and "deduced accounts" - which may contain some uncertainties. Retrosheet also only releases deduced games for full seasons. Working backwards in time, Retrosheet has released deduced games which cover every game for which event files are not available from 1948 through the present. I have helped to deduce a number of these games for the 1948 and 1949 seasons, and am continuing this deduction work for the 1947 season.

The total number of deduced games per season which are currently used in constructing Player won-lost records are shown in the next table. Note that Retrosheet has complete play-by-play data for all seasons since 1974 (as well as 1960, 1961, 1969, and 1970).

Season Deduced Games % of Total
1948 17113.9%
1949 19315.7%
1950 18214.8%
1951 15112.2%
1952 14011.4%
1953 867.0%
1954 554.5%
1955 635.1%
1956 494.0%
1957 302.4%
1958 60.5%
1959 40.3%
1960 00.0%
1961 00.0%
1962 50.3%
1963 30.2%
1964 20.1%
1965 110.7%
1966 80.5%
1967 80.5%
1968 221.4%
1969 00.0%
1970 00.0%
1971 90.5%
1972 20.1%
1973 20.1%


For my purposes, I have calculated Player won-lost records from both sources: event files and deduced files. I have chosen to do so largely under the basic premise that some data is better than no data.

For (context-neutral, teammate-adjusted) eWins, the timing of events doesn't really matter, only that events happened - i.e., all that matters is that a player went 2-for-4 with a single, double, and strikeout in his 4 at bats, not when the hits happened or how many runners were on base when he struck out. Strictly speaking, this knowledge does not require play-by-play data, merely box-score level data, which are available and known with relative certainty for all deduced games (and, in fact, for all games dating back to 1914).

For pWins and pLosses, which are context-dependent, the exact timing of these events will matter. Even for deduced games, however, the timing of most events actually are known, and this is more true the more important the event (e.g., events associated with run-scoring innings are typically reasonably well covered in newspaper stories). Because pWins and pLosses are a perfect accounting structure with a fixed number of pWins and pLosses assigned within any single game (2 pWins and 1 pLoss to the winning team, 1 pWin and 2 pLosses to the losing team), any errors in credit based on the uncertainty of events will be limited to a single game and a single team: that is, if I have inadvertently credited too many pWins to a specific player in a specific game, I must have similarly credited too few pWins to this player's teammates. This could certainly still lead to errors in the calculation of Player won-lost records, but, I believe, it minimizes the likely significance of such errors.
Nevertheless, Player won-lost records based on deduced game accounts should, perhaps, be viewed with more caution than Player won-lost records based on event files. More generally, the quality of Player won-lost calculations is a direct function of the quality of the underlying play-by-play data and that quality generally declines the farther back in time one goes. This is perhaps most significant with respect to fielding records. It is common, for example, for the exact nature of batting outs to be uncertain (i.e., we know that a batter made an out, but don't know if he grounded out to the second baseman or flew out to left field, etc.) for most deduced games, but also for many event files as one moves farther back in time. In general, these uncertainties are probably somewhat greater within deduced games than within event files, but the reality is that these uncertainties move more along a continuum from highly uncertain deduced games to very good deductions to somewhat weak event files to highly detailed event files.

Overall, while recognizing that there are uncertainties surrounding certain plays in certain games over time, I believe that the Player won-lost records presented on this website are calculated as accurately as possible given the data available to me as of today. I am also reasonably certain that the quality of these data will only continue to improve over time as Retrosheet continues its ongoing and impressive efforts to constantly add more and better data to its already impressive historical dataset.

Notes about Articles on the Website

The articles on this site are all written so that they pull data directly from the most recent version of the Player won-lost database. Hence, any numbers cited within these articles should automatically incorporate the most recent update to Player won-lost records. In some cases, however, the accompanying text may have been written based on previous versions of Player won-lost records. I apologize if this results in non-sensical text in any cases.

I hope you enjoy the Player won-lost records that I have available here. Thank you for visiting and please come back often!

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The information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at "www.retrosheet.org".
Baseball player won-lost records have been constructed by Tom Thress. Feel free to contact me by e-mail or follow me on Twitter.