Synopsis
Swing Kings: The Inside Story of Baseball's Home Run Revolution, written by Wall Street Journal baseball reporter Jared Diamond and published in 2020, explores the dramatic shift in how professional baseball players hit the ball. The book focuses on a group of unorthodox, independent hitting coaches—such as Doug Latta, Craig Wallenbrock, and Richard Schenck—who operated outside traditional Major League Baseball organizations. Recognizing that the long-standing advice of "chopping down" on the ball created inefficient grounders, these maverick instructors began teaching hitters to elevate the ball by optimizing their launch angle and creating an upward swing path.
The narrative tracks how several struggling or overlooked big-league hitters resurrected their careers by embracing these modern swing mechanics. Diamond detailed the transformations of stars like J.D. Martinez, Justin Turner, Josh Donaldson, and Chris Taylor, demonstrating how their private sessions with these unconventional gurus led to explosive power, massive contracts, and All-Star selections. As these success stories mounted, MLB front offices heavily invested in advanced technology, high-speed cameras, and data analytics—such as Statcast—to measure launch angle and exit velocity, validating the independent coaches' theories and adopting them league-wide.
Beyond individual success stories, Swing Kings paints a broader picture of a cultural and ideological shift within modern sports. It illustrates how grassroots innovation and data-driven insights disrupted decades of entrenched baseball dogmatism, completely altering offensive strategy across the league. Ultimately, Diamond captures how this swing revolution permanently changed the dynamic between pitchers and batters, ushering in a high-strikeout, high-home-run era that re-engineered the modern game of baseball.