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What Is Launch Angle?
Launch angle (LA) is the vertical angle, measured in degrees, at which a baseball leaves the bat. Statcast captures it on every batted ball. A perfectly horizontal line drive is 0°. A ball hit straight up is 90°. Grounders are negative or low-positive numbers.
Launch angle, combined with exit velocity, is the physics basis of every batted-ball outcome — which is why Statcast uses the EV/LA pair as the foundation for expected stats like xwOBA and classifications like barrels.
The Launch Angle Zones
| Zone | LA range | Typical outcome |
|---|---|---|
| Topped | < 10° | Ground ball |
| Under | 10°–18° | Low line drive / hard grounder |
| Flare/Burner | 18°–25° | Line drive |
| Sweet Spot | 25°–35° | Line drive / fly ball — max damage |
| Pop-up | 50°+ | Routine fly out or pop-up |
Sweet spot% is the share of a hitter's batted balls in the 8°–32° range (MLB's official Sweet Spot definition — a slightly wider window than the pure power sweet spot above). Elite hitters post 38%+ sweet spot rates.
League Averages
Typical MLB hitter profile:
- Avg LA: 12° (a mix of grounders and line drives)
- Sweet Spot%: 33%
- Ground-ball rate: 43%
- Fly-ball rate: 24%
Launch-angle archetypes:
- Ground-ball hitter (Yandy Díaz historically, Arraez): avg LA under 8°. Relies on contact and BABIP.
- Line-drive specialist (Freddie Freeman, Juan Soto): avg LA 12°–16°. High sweet spot%, sustainable BABIP.
- Fly-ball hitter (Pete Alonso, Eugenio Suárez): avg LA 20°+. More homers, more strikeouts, lower BABIP.
- Uppercut masher (Joey Gallo): avg LA 22°+. Barrel rate sky-high, but elevated fly-ball rate caps BABIP.
Why Launch Angle Matters
The "launch angle revolution" of the mid-2010s was hitters realizing that ground balls, even hard ones, produce far fewer runs than elevated contact. A 110 mph grounder is usually an out. A 110 mph ball at 25° is almost always a barrel.
Daniel Murphy is the canonical case: late-career swing reconfiguration to raise his average LA from 7° to 15° in 2015–2016 took him from an average hitter to a top-10 MVP finisher.
Worked Example
A hitter's batted-ball profile for a month:
| Bucket | % of BBE |
|---|---|
| LA < 10° (GB) | 30% |
| LA 10–25° (LD) | 35% |
| LA 25–50° (FB) | 28% |
| LA 50°+ (PU) | 7% |
Sweet Spot% (8–32°) ≈ 42% — elite. This hitter is leaving ground balls behind and concentrating contact in the highest-damage zone. Given 90+ mph Avg EV, this is a 30-HR profile.
Same EV, but with GB% at 50% and PU% at 15%? That's a 15-HR profile — same raw power, much worse outcomes, because the balls never end up in the right launch-angle bin.
Exit Velo × Launch Angle: The Key Interaction
The core insight: exit velocity and launch angle multiply, they don't add. A 95 mph grounder is worth almost nothing (batting average ~.220). A 95 mph line drive is worth everything (~.700 batting average). Shift the launch angle on the same contact and the run value changes by a factor of three.
This is why every modern hitter development program starts with swing path and attack angle — the goal is to push more of a hitter's contact into the 15°–30° range while preserving exit velocity.
Launch Angle in Legends Deck
Legends Deck's sim engine rolls launch angle into each simulated plate appearance based on the card's underlying batted-ball distribution. A card with elite real-world launch angle posts more extra-base outcomes in simulation. When you look at two cards with identical Power ratings but different HR totals in sim, the difference is usually launch-angle profile.
Related Terms
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