When working on your curveball, balancing stride length and arm movement is crucial to maintain control and generate maximum spin. From my experience, overstriding often causes a loss of balance and reduces pitch accuracy. It's important to find the optimal stride length where your arm swing can naturally catch up, allowing a smooth release without strain. One helpful approach is focusing on the timing of your stride relative to your arm motion. Practicing slow-motion drills can help you feel when your arms lag behind your lower body and identify the moment to initiate your arm swing. Incorporating checkpoints during your delivery—for example, pausing to ensure your front foot lands softly without overextending—also prevents overstriding. Moreover, strong core engagement aids in maintaining posture and facilitating better coordination between stride and arm action. From drilling basic mechanics to gradually increasing intensity, consistent practice builds muscle memory that helps synchronize your movements effortlessly during a game. Remember, every pitcher’s optimal stride length varies based on height, flexibility, and comfort. Using video recordings to analyze your delivery can provide insights to tweak your stride and arm coordination, enabling you to pitch your curveball with confidence and precision.