By the fall of 1942, World War II had caused many Minor League Baseball teams to disband. Young men were being drafted into the armed services, and many feared the worst for Major League Baseball. Philip K. Wrigley, who was in charge both of the Wrigley Company and the Chicago CubsNational League club, searched for a possible solution to this dilemma. The answer was to establish a women's professional baseball league as a promotional sideline to maintain the public interest in baseball.[3][4][5]
Koehn started 1945 in good form. At one point during the season she was second in the league with 18 runs batted in, but Kenosha traded her to South Bend along with Pauline Pirok (first with 20 RBI) in exchange for Lois Florreich (.243 BA) and Dorothy Schroeder (.179 BA). Her most productive season came in 1946, when she won a career high 22 games as a pitcher after the league expanded to eight teams. She made seven playoffs appearances with Kenosha (1943-'44), South Bend (1946-'47), Racine (1948), Fort Wayne (1949) and Grand Rapids (1950), but could not reach the league finals. She was also one of two hundred players to attend the first AAGPBL spring training outside the United States, which was held in 1947 in Cuba at the Gran Stadium de La Habana.[3]
Following her baseball career, Koehn went to work for Zenith Electronics for 34 years. She never married but was a loving caregiver to her nephews and great-nieces and nephews. After retiring, she stayed active as a bowler and golfer.
Phyllis Koehn, along with her former teammates and opponents, received their long overdue recognition when the Baseball Hall of Fame and Museum dedicated a permanent display to the All American Girls Professional Baseball League in 1988. She lived the last years of her life in Downers Grove, Illinois, where she died at the age of 84.[6][7]
^The Women of the All-American Girls Professional Baseball League: A Biographical Dictionary – W. C. Madden. Publisher: McFarland and Company, 2005. Format: Paperback, 295 pp. ISBN978-0-7864-3747-4
^Encyclopedia of Women and Baseball – Leslie A. Heaphy, Laura Wulf, Mel Anthony May. Publisher: McFarland & Company, 2006. Format: Paperback, 438pp. ISBN978-0-7864-2100-8