In this episode, Jack, Josh & Marek break down the importance of arsenal models in pitching, highlighting how different pitches interact to create uncertainty for hitters. They introduce new metrics like "mix" and "match," discuss the trade-offs of adding pitches, and explore how batter familiarity and training economy impact pitch effectiveness. The conversation also touches on heart rate data and the future of pitching analytics in MLB. This podcast offers a unique look into how Driveline combines research, analytics, and practical application under one roof to push baseball development forward. Whether you're a player, coach, or analytics enthusiast, you'll gain insights into the future of baseball training and performance.