As a senior in 2003–04, Allen led Oklahoma State in scoring (16 points) and guided the Cowboys to the 2004 NCAA Final Four; he recorded 13 points, 4 rebounds and 4 assists in Oklahoma State's Final Four loss to Georgia Tech on April 3, 2004. He was subsequently named Big 12 Player of the Year and earned an Honorable Mention All-America by the Associated Press. By the end of the 2003–04 season, Allen had become the first player in Cowboys history to surpass the 1,000 career point threshold in only two seasons.
