The Pilots would actually begin play in 1969. Tempe Diablo Stadium opened its doors to the Pilots for the team's (and for Tempe Diablo's) inaugural season. By 1970, it was apparent that the Pilots could not continue the way they were. Eventually the Pilots would limp to Milwaukee to become the Brewers. What many people get confused about is, who played at Tempe Diablo Stadium in March of 1970... was it the Pilots or the Brewers?