Ohio State football coach Ryan Day had praise for defensive coordinator Jim Knowles on Sunday. While speaking at the Buckeyes' championship celebration inside Ohio Stadium, Day gave Knowles a shoutout and mentioned the defense’s dominance throughout the College Football Playoff.

Ryan Day is fresh off of leading his Ohio State Buckeyes to a National Championship. After fans started calling for his job and even sending him threats following the season-ending loss to Michigan, Day went on an impressive run in the College Football Playoff.

Here's a look at how many national championships Ohio State football has won heading into the Buckeyes' CFP title game matchup with Notre Dame: