What is Oakland Athletics?
{{Infobox MLB | name = Oakland Athletics | established = 1901 | misc = Based in Oakland since 1968 | logo = Oakland A's logo.svg | uniformlogo = Oakland A's cap logo.svg | current league = American League | y1 = 1901 | division = [[American League West|West Division]] | y2 = 1969 | Uniform = | retirednumbers = {{hlist| [[Reggie Jackson|9]] | [[Rickey Henderson|24]] | [[Catfish Hunter|27]] | [[Rollie Fingers|34]] | [[Dennis Eckersley|43]] | [[Walter A. Haas Jr.|A's]] | [[Jackie Robinson|42]]}} | colors = Green, gold, white{{efn|The team's official colors are green and gold, according to the official website of the team's mascot, Stomper.<ref>{{cite web|title=About Stomper |url=https://www.mlb.com/athletics/fans/stomper |department=[[MLB Advanced Media]] |publisher=Athletics.com |access-date=August 21, 2018}}</ref>}}<ref>{{cite news|last=Clair|first=Michael|title=Why do the A's wear green? You can thank Charlie Finley|url=http://m.mlb.com/cutfour/2017/03/16/219365416/the-as-wear-green-because-of-charlie-finley|publisher=[[MLB Advanced Media]]|website=MLB.com|date=March 17, 2017|access-date=January 6, 2018|quote=Before Finley came on board, the then-Kansas City A's wore baseball's standard blue-and-red combination. In 1963, that all changed as Finley outfitted the team in glorious gold (Finley said it was the same shade the United States Naval Academy used) and kelly green for the very first time.|archive-date=January 7, 2018|archive-url=https://web.archive.org/web/20180107061138/http://m.mlb.com/cutfour/2017/03/16/219365416/the-as-wear-green-because-of-charlie-finley|url-status=dead}}</ref><br />{{color box|#003831}} {{color box|#EFB21E}} {{color box|#FFFFFF}} | y3 = 1968 | nicknames = The A's, [[Swingin' A's|The Swingin' A's]] (1970-1975), The White Elephants, The Elephants, The Green and Gold | pastnames = * Kansas City Athletics * Philadelphia Athletics | ballpark = [[Oakland Coliseum]] | y4 = 1968 | pastparks = * [[Cashman Field]] * [[Municipal Stadium (Kansas City, Missouri)|Municipal Stadium]] * [[Shibe Park]