Grimes played college football at Oklahoma State University. He was selected in the second round of the 1949 NFL Draft by the Chicago Bears, but instead played for the Los Angeles Dons of the All-America Football Conference.
Grimes represented Oklahoma State University in collegiate gridiron sports. He was picked up by the Chicago Bears in the 1949 NFL Draft's second round, however he opted to join the Los Angeles Dons of the All-America Football Conference instead.