When fans talk about breaking balls, the curveball almost always makes the highlight reel. Among its variations, the 11–5 curveball stands out as a weapon of deception and artistry. Unlike its cousin, the traditional 12–6 curve, the 11–5 version breaks not just downward but also laterally. This subtle angle gives it a different identity—harder to square up and uniquely tailored to pitchers who want to keep hitters guessing. Let’s explore its history, why pitchers use it, and how to throw it effectively.
A Brief History of the Curveball Family
The curveball itself dates back to the mid-1800s. Baseball lore credits Candy Cummings with its invention in the 1860s, when he discovered he could make the ball arc by snapping his wrist during the release. Over time, the pitch evolved into different shapes and angles, depending on arm slot, grip, and mechanics.
The 12–6 curveball became the iconic version—breaking straight down like a dropped elevator. But pitchers with slightly different arm angles, particularly three-quarters or high three-quarters deliveries, noticed their curveballs bent not only vertically but also horizontally. This diagonal break resembled the numbers on a clock face: starting at “11” and finishing at “5.” The 11–5 curveball thus carved out its own place in the pitching arsenal, especially for pitchers who wanted sharper side break in addition to vertical drop.
Over the decades, greats like Greg Maddux and Clayton Kershaw showcased variations of breaking pitches that combined downward bite with lateral movement. While some classified them as “slurves” (a mix of slider and curve), many were in fact clean 11–5 curves, demonstrating the pitch’s staying power.
Why Pitchers Use the 11–5 Curveball
The 11–5 curveball has several tactical advantages that make it a favorite among pitchers at all levels:
- Deception Against Right-Handed Hitters
For right-handed pitchers, the ball moves down and away from a right-handed batter’s swing path. It forces weak contact or swings over the top. Against left-handers, it dives toward their back foot, often freezing them. - Change of Eye Level and Plane
Unlike the 12–6, which drops directly down, the 11–5 introduces a diagonal element. Hitters tracking a fastball in a straight line suddenly have to adjust to a pitch that seems to sweep off course at the last moment. - Double Utility
It can serve as both a strikeout pitch and a weak-contact inducer. Thrown for a strike, it freezes batters who expect something straighter. Buried in the dirt, it becomes a swing-and-miss weapon. - Arm Slot Compatibility
Not every pitcher’s mechanics lend themselves to a perfect 12–6 drop. For those with a natural three-quarters arm slot, the 11–5 curveball flows more naturally and is easier to repeat consistently.
In modern baseball, where pitch design and analytics dominate, the 11–5 curveball’s horizontal break makes it stand out in scouting reports. Hitters may identify a traditional 12–6 break earlier, but the diagonal break of an 11–5 curve often remains deceptive until too late.
How to Throw the 11–5 Curveball
Throwing an effective 11–5 curveball requires precision in grip, wrist action, and release. Here’s a breakdown:
1. The Grip
Start with the classic curveball grip:
- Place your middle finger along the bottom seam.
- Rest your index finger next to it for stability.
- Your thumb supports the ball underneath, typically on the opposite seam.
The ball should feel secure but not squeezed too tightly.
2. Arm Slot and Mechanics
The key to achieving the 11–5 break is the arm slot.
- A three-quarters or high three-quarters release point creates the diagonal motion.
- A purely over-the-top arm slot tends to produce a 12–6 break instead.
3. The Release
At release, the pitcher must impart top-spin by snapping the wrist downward and slightly to the side.
- Imagine “pulling down the shade” at an angle.
- The combination of forward rotation and angled release generates the signature 11–5 spin axis.
4. Follow-Through
Let your arm finish naturally across your body. Over-manipulating the motion can reduce spin efficiency and risk injury. Consistency in follow-through keeps the pitch repeatable.
Mastering the 11–5 Curveball
Like any breaking ball, the 11–5 curveball takes time to master. Pitchers must learn to:
- Command it for strikes early in counts.
- Bury it in the dirt when ahead, luring hitters into chasing.
- Maintain consistent arm speed so it mirrors the fastball until the last instant.
The pitch also demands physical discipline. Throwing too many with improper mechanics can strain the elbow or shoulder. Coaches often recommend pitchers wait until their mechanics are solid before adding advanced breaking pitches like the 11–5.
Bottom of the Ninth
The 11–5 curveball is a blend of tradition and individuality. Rooted in the history of the curveball, it has become a specialized weapon for pitchers with the right arm slot and touch. Its deceptive diagonal break keeps hitters off balance, while its versatility makes it useful in virtually any count. For pitchers looking to expand their arsenal, mastering the 11–5 curveball can add a sharp, unforgettable bite to their game.