Rule 4.09 specifies how a team scores:
One run shall be scored each time a runner legally advances to and touches first, second, third and home base before three men are put out to end the inning. EXCEPTION: A run is not scored if the runner advances to home base during a play in which the third out is made (1) by the batter-runner before he touches first base; (2) by any runner being forced out; or (3) by a preceding runner who is declared out because he failed to touch one of the bases.
The following approved ruling clearly delineates the principle established in 4.09: "One out, Jones on third, Smith on first, and Brown flies out to right field. Two outs. Jones tags up and scores after the catch. Smith attempted to return to first but the right fielder’s throw beat him to the base. Three outs. But Jones scored before the throw to catch Smith reached first base, hence Jones’ run counts. It was not a force play." The aforementioned scenario is also known in umpiring circles as a Time Play.
What is a Time Play and how is it manifested?
A Time Play occurs when a preceding runner has an opportunity to score during a play in which a subsequent runner or batter-runner commits the third out of an inning. Umpires must be vigilant as to the possibility of a Time Play, which generally may occur during a play that begins with a runner in scoring position and two out. Most Time Plays result from a runner approaching home plate as a play is made on a subsequent runner at second or third base.
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