Baseball-Reference.com-- Baseball's History: 1871-Now

Pitch-by-Pitch Data

Pit Total Pitches Thrown

Str Strikes Thrown

Ct Strikes with contact (either in play or a foul ball)

Sw Strikes Swinging and Missing

Lk Strikes Looking

These values are only given when we know the values for the entire game and for all plays.

Thanks to the tremendous work at Retrosheet.org in addition to general play-by-play info such as 4-3. We also have some info on the sequence of pitches thrown: ball-strike looking-foul-strike swinging, etc.

Please note that this data is not 100% complete, and we have merged several datasets when producing this data. Back to 1998 is essentially complete and before then there is a great deal of data back to 1988. Previous to 1988 only a few years have data. For example, Allan Roth of the Dodgers compiled such data for many, many Dodgers games from the 50's and 60's.

Below are the percentage of all plays in a season that are missing pitch sequence data.

| year_game | Unknown Pitches |
+-----------+-----------------+
|      2007 | 0.00%           |
|      2006 | 0.00%           |
|      2005 | 0.00%           |
|      2004 | 0.00%           |
|      2003 | 0.00%           |
|      2002 | 0.00%           |
|      2001 | 0.00%           |
|      2000 | 0.00%           |
|      1999 | 0.00%           |
|      1998 | 0.00%           |
|      1997 | 7.10%           |
|      1996 | 10.36%          |
|      1995 | 6.62%           |
|      1994 | 4.29%           |
|      1993 | 3.26%           |
|      1992 | 0.04%           |
|      1991 | 0.00%           |
|      1990 | 7.95%           |
|      1989 | 2.96%           |
|      1988 | 1.56%           |

|      1987 | 99.99%          |
|      1986 | 100.00%         |
|      1985 | 100.00%         |
|      1984 | 99.99%          |
|      1983 | 100.00%         |
|      1982 | 100.00%         |
|      1981 | 99.35%          |
|      1980 | 100.00%         |
|      1979 | 94.21%          |
|      1978 | 99.30%          |
|      1977 | 99.20%          |
|      1976 | 96.76%          |
|      1975 | 95.77%          |
|      1974 | 99.85%          |
|      1973 | 99.03%          |
|      1972 | 99.33%          |
|      1971 | 96.05%          |
|      1970 | 99.24%          |
|      1969 | 99.23%          |
|      1968 | 99.42%          |
|      1967 | 99.34%          |
|      1966 | 99.59%          |
|      1965 | 98.36%          |

|      1964 | 92.25%          |
|      1963 | 84.16%          |
|      1962 | 89.10%          |
|      1961 | 89.15%          |
|      1960 | 87.47%          |
|      1959 | 87.10%          |
|      1958 | 87.37%          |
|      1957 | 87.17%          |
|      1956 | 86.81%          |

Please let us know if you have questions.

Stats updated through October 30, 2008.

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