Question: Most strikeouts by mlb pitcher in a season?

Disambiguated questions and answers:
context: No context provided
question: Most strikeouts by official mlb pitcher in a season?
short_answers: 417 strikeouts
417
context: There are several players with a claim to the single-season strikeout record. Among recognized major leagues, Matt Kilroy accumulated the highest single-season total, with 513 strikeouts for the Baltimore Orioles of the American Association in 1886. However, his name does not appear on Major League Baseball's single-season leaders list, since the American Association was independent of the constituent leagues that currently make up Major League Baseball. Several other players with high totals, including 1886 American Association runner-up Toad Ramsey (499) and 1884 Union Association leader Hugh Daily (483), do not appear either. In the National League, Charles "Old Hoss" Radbourn struck out 441 batters for the Providence Grays; however, the Providence franchise folded after the 1885 season and has no successor. Therefore, Major League Baseball recognizes his runner-up from that season, Charlie Buffinton, as the record-holder with 417 strikeouts. In the American League, Ryan leads with 383 strikeouts in 1973. The largest margin of victory for a champion is 156 strikeouts, achieved in 1883 when Tim Keefe of the American Association's New York Metropolitans posted 359 against Bobby Mathews' 203. The National League's largest margin was achieved in 1999, when Randy Johnson struck out 143 more batters than Kevin Brown. Ryan's 1973 margin of 125 strikeouts over Bert Blyleven is the best American League victory. Although ties for the championship are rare, they have occurred; Claude Passeau and Bucky Walters each struck out 137 National League batters in 1939, and Tex Hughson and Bobo Newsom tied in the American League with 113 strikeouts each in 1942. Their total is the lowest number of strikeouts accumulated to lead a league in Major League Baseball history.
question: Most strikeouts by mlb pitcher in a season, including time in independent American Association league?
short_answers: 513 strikeouts
513
wikipage: List of Major League Baseball annual strikeout leaders

Long-form answers:
knowledge: content: In baseball, the strikeout is a statistic used to evaluate pitchers.
wikipage: List of Major League Baseball annual strikeout leaders
long_answer: In baseball, the strikeout is a statistic used to evaluate pitchers. There are several players with a claim to the single-season strikeout record. Among recognized major leagues, Matt Kilroy accumulated the highest single-season total, with 513 strikeouts for the Baltimore Orioles of the American Association in 1886. However, his name does not appear on Major League Baseball's single-season leaders list, since the American Association was independent of the constituent leagues that currently make up Major League Baseball. In the National League, Charles "Old Hoss" Radbourn struck out 441 batters for the Providence Grays; however, the Providence franchise folded after the 1885 season and has no successor. Therefore, Major League Baseball recognizes his runner-up from that season, Charlie Buffinton, as the record-holder with 417 strikeouts.