Though Allen's career spanned both eras, his candidacy was pushed back to 2020 because his "best years came with the Phillies in the 1960s," according to Jeff Idelson, the Hall's president. In fact, Allen's achievements were evenly divided between both eras. He was an All-Star for seven seasons (1965-67, '70, '72-74). In addition to his Rookie of the Year Award, he was named the American League's Most Valuable Player in 1972 while in Chicago. During his 15-year major-league career, Allen batted .292, including seven seasons (1964-67, 1972-74) at the .300 mark or higher. He also hit a total of 351 home runs. Of those, 177 came with the Phillies in the 1960s, but the rest were hit in the 1970s and included the only two times he led the league in homers (1972, 1974).