In professional Baseball, as many as he wants.
But see if your not talking about the Pro's then it all depends on the LEVEL, ASSOCIATION, and mainly the AGE GROUP.
As many as necessary. Yankees great, Humphrey "7 arms" Walker pitched all 77 inning of the 1923 World Series against the Cleveland Montagues.
five.
85 Type your answer here...
6
There is no limit in regards to how many innings a Starting Pitcher must pitch in the Major League Baseball All Star game, a team can be winning and the Starting Pitcher could pitch only 2 innings but because All Star games have different rules, they can be given the Win.
Four consecutive innings if she is the starting pitcher. There's no minimum number required for relief pitchers.
4Seven
5
More than 50 innings for a pitcher and more than 130 AB for a position player
In a Major League Baseball game, Starting Pitchers can pitch as many innings as needed, it is up to the discretion of his Manager however Starting Pitchers must pitch 5 innings in order to qualify for a win.
Unlike the starting pitcher, a relief pitcher has no minimum number of innings pitched. Given the definition of a win, however, it's impossible for a pitcher to achieve it without pitching at least 0.1 inning (one out).
It depends. In many youth leagues it is based on pitches. When you get into upper youth leagues they then begin to base it on innings. As you get into adult leagues there often is no limit.
5 innings