The Kansas City Cowboys were admitted to the American Association on January 17, 1888, after the New York Metropolitans folded. The Brooklyn Dodgers purchased what remained of the Mets, hoping to obtain the services of the now-unemployed New York players. The Cowboys, meanwhile, would have a rough inaugural season, finishing with a 43-89 record, putting them in last place in the AA.
Jumbo Davis of the Kansas City Cowboys committed five errors in a game against St. Louis on June 25, 1888. Over the course of the sesason, Davis committed 100 errors in 628 chances at shortstop and third base, giving him a .841 fielding percentage for the year (his lifetime fielding percentage would be .825). Kansas City lost the game to St. Louis, 10-3.