Buechele attended Lamar High School in Arlington, Texas, where he was a star in both football and baseball.

[2] Despite growing up in a pro-Oklahoma Sooner household, Buechele committed to rival Texas to play college football.

[3][4][5] Sources: Buechele competed with Tyrone Swoopes for the Longhorns' starting quarterback job his freshman year in 2016.

However, due to various injuries, he was replaced by backup quarterback Sam Ehlinger in subsequent games against San Jose State and USC.

[21][22] He was elevated from the practice squad on November 16, 2021 but spent the rest of the season on the inactive list.

[27] Buechele was placed on injured reserve with a neck injury on August 13, and missed the entirety of the season.

[29] Buechele's father, Steve, played in Major League Baseball (MLB) from 1985 to 1995 and is a TV analyst for the Texas Rangers.

[31] On March 12, 2023, Buechele married his long-time girlfriend Paige Loren in Grapevine, Texas.