For the Royals, that speed pays off in the field too. According to , Kansas City players collectively finished with the highest Ultimate Zone Rating (UZR) – an advanced metric that measures defensive value – in the majors. Kansas City’s outfield, with three-time Gold Glove winner Alex Gordon in left, Lorenzo Cain in center, and defensive replacement Jarrod Dyson shoring up center field in the late innings (Cain then usually moves to right), have baseball analysts raving. “Let’s be clear what we’re talking about here,” wrote Sam Miller of Baseball Propectus. “We’re not just talking about a good outfield, or a great outfield. We’re talking about what one might decide to argue is the greatest defensive outfield of all time.”
The Union Association survived for only one season (1884), as did the Players' League (1890), an attempt to return to the National Association structure of a league controlled by the players themselves. Both leagues are considered major leagues by many baseball researchers because of the perceived high caliber of play and the number of star players featured. However, some researchers have disputed the major league status of the Union Association, pointing out that franchises came and went and contending that the St. Louis club, which was deliberately "stacked" by the league's president (who owned that club), was the only club that was anywhere close to major league caliber.