Mike Scioscia

He managed the Angels from the 2000 season through the 2018 season, and was the longest-tenured manager in MLB and second-longest-tenured coach/manager in the "Big Four", behind only Gregg Popovich, at the time of his retirement. As a player, Scioscia made his major league debut with the Los Angeles Dodgers in 1980. He was selected to two All-Star Games and won two World Series over the course of his 13-year playing career, which was spent entirely with the Dodgers; this made him the only person in MLB history to spend his entire playing career with one team and entire managing career with another team with 10+ years in both organizations. He was signed by the San Diego Padres and Texas Rangers late in his career, but never appeared in a game for either team due to injury.