Where did the term “rubber match” come from?

The term “rubber match” or “rubber game” can refer to the deciding game of a series of any length, not just three games. Game Seven of a World Series is an example. The term was borrowed from the card game bridge. In bridge, when the two sides have split the first two games, the third and deciding game has always been called the rubber game. The translation to baseball was easy, since most regular-season series are three games long.