On this day in 1969, the Seattle Pilots did something no team in franchise history had done before or has done since: Play a road game in Milwaukee. The White Sox, struggling to draw fans at home in Chicago, moved the first game of a four game set against the expansion Pilots to Milwaukee, where 13,133 fans came to County Stadium to watch the future Brewers lose 8-3. It was the fifth of eleven regular season games played in Milwaukee in 1969, but the only one involving the Pilots.
The two teams resumed the series two days later with a doubleheader in Chicago, and drew just 6,044 fans. The next day they played the series finale in front of 2,318.
I could tell you much more about the game but TheJay did an excellent job remembering the day last year, so I'll refer you over there instead.