Britannica Sources used in this answer

What are the four infield positions in baseball?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

In baseball, the four infield positions that make up the inner ring of the defense are as follows:12

  • First baseman: Typically positioned near first base, this player often serves as a large target for throws from other fielders.13
  • Second baseman: Positioned to the right of second base, this player requires significant range and agility to cover the base and handle ground balls.1
  • Shortstop: Located to the left of second base, this position is considered highly demanding and requires outstanding agility and a strong throwing arm.1
  • Third baseman: Stationed near third base, this player must possess exceptional reflexes to handle balls hit in their direction.14

Together, these players are responsible for fielding ground balls and guarding the bases to prevent runners from advancing.1