In this episode, the R&D posse: Jack, Josh, and Marek are joined by special guest Stephen Sutton Brown for a deep dive into the intersection of engineering and baseball analytics. From modeling batter perception and pitch outcomes to the evolution of swing metrics and arsenal design, the conversation explores how new data is reshaping our understanding of the game. Stephen shares key insights from his work at Baseball Prospectus and General Motors, highlighting the challenges of modeling dynamic decisions, the promise of bat tracking, and what might be next in performance analysis.  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.