After serving two years in World War II, the 36-year-old "Schoolboy" returned to the Phillies in top form. In 1946, Rowe was 11–4, led the league in winning percentage, and had a career-low earned run average of 2.12. Rowe followed with another strong season in 1947, earning a final All-Star nod. That season, he also became the first and only pitcher in Major League history to be intentionally walked twice in the same game. He was released by the Phillies after the 1949 season and finished his pitching career in 1950, with San Diego in the Pacific Coast League.