 He was also chosen as a second team All-American in 1919, becoming just the sixth black player ever to earn All-American honors in college football.In Slater’s senior year in 1921, Iowa claimed a share of the 1921 national championship, posting a perfect 7-0 record and never trailing at any point during the season.The 1921 Hawkeyes captured the school’s first Big Ten title in 21 years and won the first outright Big Ten crown in school history.