What pitcher holds the record for most strikeouts in a single season?

Answer 1

Matt Kilroy of the Baltimore Orioles had 513 strikeouts in 1886. Nolan Ryan who had 383 strikeouts in 1973 for the California Angels holds the modern day record. The record for most strikeouts in a single game is 20, shared by Kerry Wood and Roger Clemens, who did it twice. -------------------------------------------------------------------------------------------------------------------------- Not really germaine to the question but the record for most strikeouts in a game is 21 held by Tom Cheney of the Washington Senators who did the deed in 1962 against the Baltimore Orioles in a 16 inning game. Wood, Clemens, and Randy Johnson hold the record for strikeouts in a 9 inning game with 20.