<Tr> <Th> IP </Th> <Td> Innings pitched by the pitcher in the game </Td> </Tr> <Table> MLB pitchers with 18 strikeouts in an extra-inning game <Tr> <Th> Pitcher </Th> <Th> Date </Th> <Th> Team </Th> <Th> Opposing team </Th> <Th> Score </Th> <Th> Strikeouts </Th> <Th> IP </Th> <Th> Career Ks </Th> <Th> Refs </Th> </Tr> <Tr> <Th> Tom Cheney </Th> <Td> September 12, 1962 </Td> <Td> Washington Senators </Td> <Td> Baltimore Orioles </Td> <Td> 2--1 </Td> <Td> 21 </Td> <Td> 16 </Td> <Td> 345 </Td> <Td> </Td> </Tr> <Tr> <Th> Randy Johnson </Th> <Td> May 8, 2001 </Td> <Td> Arizona Diamondbacks </Td> <Td> Cincinnati Reds </Td> <Td> 4--3 </Td> <Td> 20 </Td> <Td> 9 </Td> <Td> 4,875 </Td> <Td> </Td> </Tr> <Tr> <Th> Luis Tiant </Th> <Td> July 3, 1968 </Td> <Td> Cleveland Indians </Td> <Td> Minnesota Twins </Td> <Td> 1--0 </Td> <Td> 19 </Td> <Td> 10 </Td> <Td> 2,416 </Td> <Td> </Td> </Tr> <Tr> <Th> Nolan Ryan </Th> <Td> June 14, 1974 </Td> <Td> California Angels </Td> <Td> Boston Red Sox </Td> <Td> 4--3 </Td> <Td> 19 </Td> <Td> 13 </Td> <Td> 5,714 </Td> <Td> </Td> </Tr> <Tr> <Th> Nolan Ryan </Th> <Td> August 20, 1974 </Td> <Td> California Angels </Td> <Td> Detroit Tigers </Td> <Td> 0--1 </Td> <Td> 19 </Td> <Td> 11 </Td> <Td> 5,714 </Td> <Td> </Td> </Tr> <Tr> <Th> Nolan Ryan </Th> <Td> June 8, 1977 </Td> <Td> California Angels </Td> <Td> Toronto Blue Jays </Td> <Td> 2--1 </Td> <Td> 19 </Td> <Td> 10 </Td> <Td> 5,714 </Td> <Td> </Td> </Tr> <Tr> <Th> Warren Spahn </Th> <Td> June 14, 1952 </Td> <Td> Boston Braves </Td> <Td> Chicago Cubs </Td> <Td> 1--3 </Td> <Td> 18 </Td> <Td> 15 </Td> <Td> 2,583 </Td> <Td> </Td> </Tr> <Tr> <Th> Chris Short </Th> <Td> October 2, 1965 </Td> <Td> Philadelphia Phillies </Td> <Td> New York Mets </Td> <Td> 0--0 </Td> <Td> 18 </Td> <Td> 15 </Td> <Td> 1,629 </Td> <Td> </Td> </Tr> <Tr> <Th> Jim Maloney </Th> <Td> June 14, 1965 </Td> <Td> Cincinnati Reds </Td> <Td> New York Mets </Td> <Td> 0--1 </Td> <Td> 18 </Td> <Td> 11 </Td> <Td> 1,605 </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Pitcher </Th> <Th> Date </Th> <Th> Team </Th> <Th> Opposing team </Th> <Th> Score </Th> <Th> Strikeouts </Th> <Th> IP </Th> <Th> Career Ks </Th> <Th> Refs </Th> </Tr> <Tr> <Th> Tom Cheney </Th> <Td> September 12, 1962 </Td> <Td> Washington Senators </Td> <Td> Baltimore Orioles </Td> <Td> 2--1 </Td> <Td> 21 </Td> <Td> 16 </Td> <Td> 345 </Td> <Td> </Td> </Tr>

Who holds the record for most strikeouts in a single game