At the end of the 1947 baseball season, Saigh got wind that longtime Cardinals owner Sam Breadon wanted to sell. Breadon faced two problems. He was ill with prostate cancer, and he had been unable to find land on which to build a planned new ballpark. The Cardinals had rented Sportsman's Park from the city's other major league team, the American League Browns, since 1920. Although they had long since surpassed the Browns as the city's most popular team, Breadon wanted to build a park of his own. He had set aside $5 million to build a park, and was facing the end of a five-year deadline to build it before having to pay taxes on that money. Saigh persuaded Breadon to sell the Cardinals to him, with the assurance that he wouldn't have to pay taxes on his $5 million fund. To further put him at ease, Saigh brought in Robert Hannegan as a minority partner. Hannegan was a prominent St. Louis businessman, former United States Postmaster General, and confidante of President Harry Truman. The $4 million deal closed in late 1947.