The Second baseman reference article from the English Wikipedia on 24-Apr-2004
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Second baseman

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A second baseman is the baseball player guarding second base. Also called 2B, or second bagger, the second baseman often possesses quick hands and feet, needs the ability to get rid of the ball quickly, and must be able to make the pivot on a double play. Second base is also known as the keystone sack.

Second basemen must be quick on their feet to hold the runner on base, back up the shortstop on all throws from the catcher, cover first base on bunted balls, and to field the position to either side. On a hit batted to right field, the second baseman goes out towards the ball for the relay.

List of popular players at second base