In his final major league season, Hoover was a member of the 1945 Detroit Tigers team that won the American League pennant and defeated the Chicago Cubs in the 1945 World Series. However, after two seasons as the team's everyday shortstop, Hoover in 1945 divided shortstop duties with Skeeter Webb; Hoover started 55 games at shortstop, while Webb started 99. Hoover's last major league appearance came in Game 6 of the 1945 World Series. He had a single in three World Series at bats. He also had an RBI and scored a run in an 8–7 loss to the Cubs.