Decaon Phillippe of the Pittsburgh Pirates with 5 in the 1903 World Series (record was 3-2). That series went 8 games.
No surprise (to me at least) that the answer is Whitey Ford, who started 22 World Series games, winning ten of them -- also a record.
Whitey Ford of the New York Yankees holds the MLB record for World Series pitching victories with 10.
Hall of Fame pitcher Whitey Ford of the New York Yankees won 10 World Series games during his career. He also holds the record for most Series losses with eight.
New York Yankees hurler Ed "Whitey" Ford won a record 10 World Series games during his career.
Bob Gibson holds the World Series record for most strikeouts by a pitcher in a World Series (35 in 1968) and most strikeouts by a pitcher in a single game (17 in Game 1 of the 1968 WS). He is tied for most games won by a pitcher in a World Series (3 in 1967).
As a pitcher, Babe Ruth appeared in 163 games and his record was 94-46. He also appeared in three World Series games and won all three.
Through the 2010 World Series, that is Mariano Rivera of the Yankees who has appeared in 24 World Series games.
Pittsburgh Pirate pitcher Deacon Phillippe completed 5 games in the first world series in 1903. He won three of these games.