At Nicollet Park in Minneapolis, Irv Young puts on “the greatest single-day mound performance in the history of the Millers”. In the first game of a doubleheader with the Milwaukee Brewers, Young holds them to four hits to win, 1 – 0. Young homers in the 5th for the game’s only run. So impressive is Young that he pitches the nitecap, holding the Brewers hitless until the 9th and finishing with a one-hit, 5 – 0 victory. The double shutout puts the Millers two games in front of Milwaukee. The two teams will fight for the American Association lead for the next two months, before fading in the final week, allowing Louisville to sneak into first.

On July 13, 1909At Nicollet Park in Minneapolis, Irv Young puts on “the greatest single-day mound performance in the history of the Millers”. In the first game of a doubleheader with the Milwaukee Brewers, Young holds them to four hits to win, 1 – 0. Young homers in the 5th for the game’s only run. So impressive is Young that he pitches the nitecap, holding the Brewers hitless until the 9th and finishing with a one-hit, 5 – 0 victory. The double shutout puts the Millers two games in front of Milwaukee. The two teams will fight for the American Association lead for the next two months, before fading in the final week, allowing Louisville to sneak into first.

Source
Baseball Reference July 13