The NFL just received its biggest shakeup.

Rumors about this move hovered around the league for months.

And this big retirement just threw the NFL offseason into chaos.

New Orleans Saints quarterback Drew Brees announced his retirement on Sunday with a post on Instagram accompanied by a video of his children telling the world that their dad was stepping away from the game of football.

Brees wrote:

After 20 years as a player in the NFL and 15 years as a Saint, it is time I retire from the game of football. Each day, I poured my heart & soul into being your Quarterback. Til the very end, I exhausted myself to give everything I had to the Saints organization, my team, and the great city of New Orleans. We shared some amazing moments together, many of which are emblazoned in our hearts and minds and will forever be a part of us. You have molded me, strengthened me, inspired me, and given me a lifetime of memories. My goal for the last 15 years was striving to give to you everything you had given to me and more.

I am only retiring from playing football, I am not retiring from New Orleans. This is not goodbye, rather a new beginning. Now my real life‘s work begins!

Brees announced his retirement 15 years to the day that he signed with the New Orleans Saints after the San Diego Chargers let him go following a devastating shoulder injury.

The Saints signing Drew Brees changed the trajectory of the two franchises.

The Miami Dolphins also considered signing Brees, but passed due to medical concerns over his shoulder.

Instead, the Dolphins brought in former Vikings quarterback Dante Culpepper.

With Brees under center, the Saints became an instant championship contender advancing to the NFC Title Game his first season and winning the franchise’s only Super Bowl in the 2009 season.

For 15 years the Saints were a constant playoff contender.

The Dolphins whiffed big time.

Injuries limited Culpepper to just 8 games and 4 starts in his one season in Miami as the Dolphins embarked on a 15 year run where mediocrity was the most the team aspired to.

Now Drew Brees’ career is over and he will wait for his call from the Pro Football Hall of Fame.

Sports with Balls will keep you up-to-date on any new developments in this ongoing story.