As of the 2008 World Series: 1) Jack Billingham - 0.36 - 25 1/3 innings pitched in the 1972, 1975, and 1976 World Series.
2) Harry Breechen - 0.83 - 32 2/3 innings pitched in the 1943, 1944, and 1946 World Series.
3) Babe Ruth - 0.87 - 31 innings pitched in the 1916 and 1918 World Series.
4) Sherry Smith - 0.89 - 30 1/3 innings pitched in the 1916 and 1920 World Series.
5) Sandy Koufax - 0.95 - 57 innings pitched in the 1959, 1963, 1965, and 1966 World Series.
6) Christy Mathewson - 0.97 - 101 2/3 innings pitched in the 1905, 1911, 1912, and 1913 World Series. Useless bit of trivia: According to Baseball Reference, Jack Billingham and Christy Mathewson are cousins.
Jim 'Catfish' Hunter with 13 innings pitched.
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Babe Ruth
whitey ford
2.76 in the regular season (713 earned runs allowed in 2324 1/3 innings pitched) and 0.95 in the World Series (6 earned runs in 57 innings pitched).
The New York Yankees Mariano Rivera holds the all time Post season record of 33 1/3 scoreless innings pitched. Whitey Ford holds the World Series record with 33 consecutive scoreless innings pitched. Christy Mathewson pitched 27 consecutive scoreless innings in a single post season as he threw 3 shutouts in the 1905 World Series.
Babe Ruth with 29 2/3 consecutive scoreless innings pitched in World Series play.
Bob Gibson's regular season ERA was 2.91 (1258 earned runs in 3884 1/3 innings pitched) and his World Series ERA was 1.89 (17 earned runs in 81 innings pitched).
0. Hy Vandenberg pitched in one World Series, the 1945 Series for the Chicago Cubs who lost to the Detroit Tigers 4 games to 3. He was in three games and pitched six scoreless innings.
Through the 2008 season, that is Mariano Rivera who has pitched 117 1/3 innings in the postseason to an ERA of 0.77. He has pitched 47 2/3 innings in the ALDS to an ERA of 0.38, 38 2/3 innings in the ALCS to an ERA of 0.93, and 31 innings in the World Series to an ERA of 1.16. All told, he has given up 10 earned runs in postseason play.
The star lefty handed pitcher for the Boston Red Sox, Babe Ruth, established the record of 29 and 2 thirds consecutive scoreless World Series innings pitched. It was not till 1961 that Whitey Ford broke Babe Ruth's World Series record, at 33 innings.
1.10 ... Beckett pitched 16 1/3 innings and allowed 2 earned runs.