Tim Tebow shared a message on social media after the announcement of Nick Saban’s retirement.

The former Florida quarterback squared off against Saban twice, with each side winning once. Tebow is widely considered to be one of the greatest college QBs ever, while Saban gets the same distinction among coaches.

“Through the battles against each other and through the years watching you, you’ve adapted, grown and won so consistently, leading young men through the highs and lows, wins and losses,” Tebow wrote in a post on X, formerly Twitter.

“You’ve been one of the best, if not the best, to ever do it. What an impact you’ve had on the game. What a legacy you’ll leave on thousands of players and millions of fans. Thanks for being a tough opponent and a tougher coach,  championing excellence on and off the field, and in lives of generations to come. Congrats on an amazing career Coach Saban.”

Saban called it quits after a 17-year tenure with the Crimson Tide that resulted in six national championships and solidified the team among the nation’s elite.