Infield Depth
Also known as: infield positioning, playing in, playing back
Infield depth is how far the infielders play from home plate. This means "in" (shaded forward to cut off a run) or "back" (standard depth to maximize range on ground balls and line drives).
In slow pitch with a run on third and one out, the infield may "play in" at the corners to cut off a ground ball before it scores the runner. This means accepting the trade-off of reduced range on harder-hit balls. Standard depth (back) maximizes the probability of recording an out on any batted ball. Playing too deep invites slow rollers to score base runners; too shallow gives hitters a larger outfield gap to drop balls. Depth decisions are made pre-pitch based on score, inning, and outs.
As a new infielder, play at standard depth until you understand your reaction time and throwing arm. This means then start adjusting based on the batter's known tendencies.
Use spray charts from prior at-bats to set exact infield depth for each batter. This means the right positioning before the pitch eliminates the need for difficult reactions after contact.
Example
Third base and first base play in with a runner on third and one out to cut off the potential tying run at the plate.
How it shows up on video
Infield depth is a pre-pitch positioning adjustment visible before each at-bat. Playing in (shallow) means infielders are near the basepath, positioning for a home-plate throw or preventing a slow roller from becoming a hit. Playing back means standard depth near the base. Camera angles from center field best reveal these adjustments.
Common mistakes
- Playing the same depth for every batter regardless of their speed, power, or tendency to pull the ball
- Forgetting to communicate depth adjustments to all infielders, creating uneven positioning across the infield
- Playing too shallow with less than two outs and the bases loaded, giving up extra-base hits for a home-plate play that may not happen
- Not adjusting depth based on game situation — a one-run lead late in the game calls for different positioning than a blowout
In SwingVantage Motion Lab
SwingVantage can map batted-ball spray charts from uploaded video, helping teams identify where to position infielders based on individual batter tendencies.
Related terms
- Defensive PositioningDefensive positioning is the pre-pitch alignment of all fielders based on the current hitter's tendencies, the game situation, the count, and the score.
- Defensive ShiftA defensive shift is an unconventional repositioning of fielders toward one side of the field to take away a pull hitter's most likely batted-ball zone.
- Double PlayA double play retires two base runners on the same batted ball. This is most commonly on a ground ball through the infield with a runner on first.
Related guides & benchmarks
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