Kansas City Chiefs quarterback Patrick Mahomes wants the world to know that he was an up-and-coming basketball star before establishing himself as one of the best players in the NFL.

"I promise I was hoopin!!!" Mahomes wrote in response to a mixtape of his high school basketball career:

Patrick Mahomes II @PatrickMahomes

I promise I was hoopin!!! They didn't have to put the charge on the highlights tho 😂😂😂 <a href="">

Mahomes told ESPN earlier this year that basketball was his "first love."

Mahomes also pitched for his school's varsity baseball team, taking the same position that his father Pat Mahomes played for 11 seasons in the MLB between 1992 and 2003.

Additionally, Mahomes served as quarterback for the school's varsity football team.

His former high school football coach, who later became the school's athletic director, told Yahoo Sports' Dan Wetzel in 2020 that Mahomes was "the poster child for the multisport athlete."

"Because he played multiple sports, the overlay of all of those experiences and skills are there in the NFL," Cook told Wetzel. "It's all just one game for Patrick. It's always been just one big game, just on different playing surfaces."

According to Sam McDowell of the Kansas City Star, the baseball and football teams worked to arrange their schedules so that it was possible for Mahomes to play for both squads.

Of those three sports, basketball and baseball were initially his favorites, the Chiefs quarterback told Nate Burleson of CBS Mornings last year.

"I played every sport, and I found passion for a lot of them," Mahomes told Burleson. "Football was probably my third-favorite sport growing up, all the way until probably my junior or senior year of high school."

Mahomes continued playing both baseball and football at Texas Tech but decided to commit solely to football for his junior year of college.

That decision ultimately resulted in Mahomes earning a top-10 spot in the 2017 NFL draft and in the Kansas City Chiefs winning three Super Bowls since.

Mahomes and the Chiefs are set to kick off their bid for a championship three-peat on Sept. 5 with an AFC Championship Game rematch at home against the Baltimore Ravens.