Inbaseball, aleft fielder, abbreviatedLF, is anoutfielder who plays defense inleft field. Left field is the area of the outfield to the left of a person standing athome plate and facing towards thepitcher's mound. In the numbering system used to record defensive plays, the left fielder is assigned the number seven.^[1]

Of all outfielders, the left fielder often will have the weakest arm, as he generally does not need to throw the ball as far to prevent the advance of any baserunners, especially at third base.^{[2]: 40–41} The left fielder still requires good fielding and catching skills, and tends to receive more balls than the right fielder becauseright-handed hitters tend to"pull" the ball into left field.^[1] Right-handed players have a slight fielding advantage in left field because their hardest defensive plays will be along the third-base foul line, to the fielder's right. Right-handed players can throw the ball back to the infield harder and faster since the ball is already on the right side of their bodies.^[3]: 274

Outfielders have a critical off-ball role as well: backing up the other fielders when a ball is hit or thrown to them. When a ground ball is hit to the left side of the field, the left fielder will run behind thethird baseman orshortstop in case the ball gets by them. Onbunts,pickoffs and inrundowns, the left fielder backs up or covers third base. Similarly, when a runner is stealing third base, the left fielder will back up the throw from the catcher in case the throw misses third base.^[3]: 288 Left fielders also back up third base when a ball is thrown from right field, and back up center field when a pop fly is hit into left-center field.

Left fielders defer tocenter fielders on fly balls, as the center fielder is generally the better defender of the two. Managers often place their powerful hitters in left field since defensive ability is less important there.^{[4]: 105, 112}

The following are baseball players inducted to theNational Baseball Hall of Fame as left fielders:^[5]

• Baseball Hall of Fame
• Gold Glove Award

• Baseball positions
• Softball

• Articles with short description
• Short description is different from Wikidata