[3] Kancey played in one game his freshman year at Pittsburgh in 2019, the 2019 Quick Lane Bowl, and took a redshirt.
As a 14-game starter in 2021, Kancey had 35 tackles and seven sacks and was named a third-team All-American by the Associated Press.
[5][6] Kancey was selected by the Tampa Bay Buccaneers in the first round of the 2023 NFL draft with the 19th overall pick.
[10] After re-aggravating a calf injury during his debut in a Week 1, 20–17 win over the Minnesota Vikings,[11] Kancey played his first full NFL game in a Week 6, 20–6 loss to the Detroit Lions, during which he recorded six quarterback pressures and his first career sack.
[14] In his first career playoff game against the Philadelphia Eagles, Kancey recorded four tackles, a sack, a tackle for loss, helped contribute to a safety, and helped contribute to stopping not just one, but two Brotherly Shove attempts in the Buccaneers' Wild Card Round victory.