I'm sure it's 1, but I can't think of any particular instances of that.
One strange instance that sticks out in my mind was during the 2011 World Series, when Tony LaRussa made a pitching change and called Lance Lynn in from the bullpen. Lynn faced one batter, intentionally walked him, and then another pitching change was made.
If you're talking about complete games by starting pitchers, Charley "Red" Barrett of the Boston Braves only needed 58 pitches to go all 9 innings on August 10, 1944.
yes there has in usa Baseball a pitchter in a high school game in Ohio he's name is r.l eisenboch i don't know if its spelled right thought
Not in MLB or the minor leagues. But there has been one pitcher that struckout 27 batters in a game. That was Ron Necciai who was pitching for the Bristol Twins of the Appalachian League in 1952. He was credited with 27 strikeouts in a 7-0 no-hitter he pitched against the Welch Miners. He did give up a walk and hit a batter in the game. Another batter reached base on a passed ball on a third strike. Necciai wound up striking out the next batter to record four strikeouts in an inning. The only two batters that hit the ball grounded out to the first baseman and reached base on an error.
In the history of Baseball, as of the 2012 Major League Baseball (MLB) season, 21 perfect games ("27 up, 27 down") have been thrown - 19 of which have been thrown in the Modern Era. Of these 21 perfect games thrown, none has been pitched with only 27 pitches being thrown. On record, the fewest pitches thrown in a perfect game was 74 pitches thrown by Addie Joss of the Cleveland Naps against the Chicago White Sox on October 2, 1908.
5,000 +
The pitcher that struck out the most batters in history is Nolan Ryan. He has struck out 5,714 batters during his career from September 11, 1966 until September 22, 1993.
Arguably the best MLB pitcher of all time was Nolan Ryan. While he had thousands of walks, he also had a relatively low ERA and struck out over 5,000 batters.
Roger Clemens
Josh Beckett
There have been 51 instances in which a pitcher has struck out four batters in one half inning. The most recent was Scott Shields of the Los Angeles Angels on June 21, 2008.
Koufax
Usually AB is an offensive stat which stands for At Bat, meaning who is batting at the current moment. BF usually stands for Batters Faced, used as a pitching stat next to how many batters that pitcher struck out (Batters faced is not used in computing a pitcher's ERA, or Earned Run Average. See http://en.wikipedia.org/wiki/Earned_run_average)
Sammy Stewart, although Dunkin Donuts trivia game contest says that answer is wrong. Sammy Stewart did it pitching for the Orioles against Cleveland on September 1, 1978.
As of the 2008 season, that is Ferguson Jenkins who struck out 274 batters in 1970.
No, not in the Majors. The least amount in a 9 inning game was by Charles "Red" Barrett of the Boston Braves, who threw only 58 pitches against the Cincinnati Reds in 1944.
There have been three pitchers to strikeout 20 batters in one game and one pitcher to strikeout 21 batters in a game. The three to strikeout 20 were Kerry Wood, Roger Clemens, and Randy Johnson. All three struckout all those batters in a nine inning game. The pitcher to strikeout 21 batters, Tom Cheney, needed 16 innings. Cheney's 21 strikeouts is the MLB record for strikeouts by a pitcher in a single game.