- Published in Top 50 Kansas City Royals
13. Dennis Leonard
Dennis Leonard was the relentless engine of the Kansas City rotation during their first golden era, a right-hander whose durability was as steady as the mustache he famously wore. In an age where the Royals were constantly battling for American League supremacy, Leonard provided a high-frequency workload that turned him into the winningest right-hander in the sport over a seven-year stretch.
Leonard’s ascent in Kansas City began in 1974, but he reached a major turning point in 1975 when he secured 15 wins and proved he could handle the demands of a full season. He possessed a focused intensity that allowed him to move past his prospect years and become a franchise pillar almost overnight. By 1977, he reached a career peak for volume, winning 20 games for the first time and finishing fourth in the Cy Young voting.
Leonard became the only pitcher in Royals history to record three separate 20-win seasons, reaching that mark again in 1978 and 1980. During the 1980 campaign, he was the primary outlier in the rotation that led Kansas City to its first-ever World Series appearance. He showed the organization that a pitcher could become a legend by simply refusing to yield the mound, eventually amassing more wins than any other right-handed starter in the American League between 1975 and 1981.
Everything seemed to be building toward a historic total until the 1982 season, when the heavy workload of his peak years led to a series of devastating knee injuries. Leonard spent the next few seasons navigating a difficult, injury-plagued plateau, undergoing multiple surgeries that kept him off the diamond for nearly three full years. He showed a remarkable professional resilience by returning to the mound in 1986, winning eight games in a veteran-like comeback that served as an inspiration to the clubhouse. He eventually retired with 144 wins and 1,323 strikeouts, having spent his entire twelve-year professional life in a Royals uniform.
In 1989, the Royals inducted him into their Hall of Fame.