Nick Saban, the head coach of the Alabama Crimson Tide football has announced retirement after 17 seasons.
Saban is widely regarded as one of the greatest coaches in college football history.
He has been the head coach at Alabama since 2007, and has led the team to six national championships.
Saban's retirement comes as a surprise to many, as he had previously indicated that he planned to continue coaching for several more years.
The news of Saban's retirement has sent shockwaves through the college football world.
Saban's impact on the sport of college football cannot be overstated, as he has been a driving force behind many of the changes and innovations that have taken place in recent years.
The search for Saban's replacement will likely be a long and difficult process, as he leaves behind some very big shoes to fill.