Left-Side Defense vs Slappers
Also known as: slapper defense, defending the slap
Left-side defense against slappers adjusts the shortstop and third baseman's positioning and first-step reads to cover both a slapped ground ball and a bunt from a left-handed slap hitter.
A left-handed slap hitter changes the geometry of infield defense. This means her momentum is already carrying her toward first base at contact. This shrinks the time infielders have to field and throw compared to a stationary right-handed hitter. The shortstop typically creeps in and toward third base to cover both a slapped chopper and a possible drag bunt. At the same time, the third baseman has to balance guarding the bunt without being pulled. As a result, far in that a hard-slapped ball gets through.
Defenses facing a known slapper often assign the shortstop primary bunt-coverage responsibility on the left side rather than the third baseman, since the shortstop's more central position and typically stronger arm make for a better throw across the diamond on a ball fielded closer to the mound. Communication between shortstop, third baseman, and pitcher before the pitch is essential. This is. This is because a slapper can bunt, chip-slap, or run-and-slap on the same pitch look. The defense has to be ready for all three without tipping its assignment.
Scout a known slapper's tendency toward bunt, chip-slap, or full run-and-slap before the series, and pre-assign left-side responsibilities rather than deciding on the fly.
Example
Facing a known slapper with a runner on, the shortstop creeps in several steps toward the third-base line. At the same time, the third baseman holds a more moderate depth, covering both the bunt and a hard-slapped grounder.
Why it matters
Standard infield positioning is built around a stationary hitter and breaks down against a slapper's combination of bunt threat and moving-target ground balls. This means defenses that don't adjust give up easy hits they would otherwise field cleanly.
Common mistakes
- Positioning the left side as if facing a standard right-handed hitter, ignoring the slapper's different threat profile
- Assigning bunt coverage to the third baseman by default instead of considering the shortstop's throwing angle advantage
- Failing to communicate assignments before the pitch, leaving both the bunt and a slapped grounder uncovered
In SwingVantage Motion Lab
Motion Lab is focused on the hitter and pitcher rather than defensive scheme, though reviewing a slapper's tendencies on video can inform a defense's positioning decisions.
Frequently asked questions
Why does a slapper require different infield positioning?
Because a slapper is already moving toward first base at contact, infielders have less time to react, and she also threatens a bunt on the same pitch. As a result, both corners and the shortstop must adjust their depth and assignments.
Related terms
- Reading the Bunt DefenseReading the bunt defense means identifying, before the pitch, how the corner infielders and pitcher are positioned to field a bunt, and using that read to decide bunt type and placement.
- First Baseman Bunt CoverageFirst baseman bunt coverage is the responsibility to charge bunts hit toward the first-base line while the second baseman covers first base in her place.
- Middle Infield Bunt CoverageMiddle infield bunt coverage is the shortstop and second baseman's job of covering second and third base and backing up throws when the corner infielders and pitcher vacate their positions to field a bunt.
- Slap HittingSlap hitting is a left-handed offensive technique where a fast runner moves through the batter's box toward the pitcher. At the same time, making contact, converting their running start into a head-start toward first base.
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