Kevin Jeese Lee Jr.[6] (born September 4, 1992) is an American professional mixed martial artist.

[7][1][8][9][10] He competed in basketball growing up and began wrestling during his junior year at Southfield High School.

Lee continued his wrestling career at Grand Valley State University, where he was a national tournament qualifier and went 37–0 as a sophomore.

However, with two years left of wrestling eligibility at the school, Lee dropped out to focus on a career in mixed martial arts.

[12] After the loss, Lee moved from his native Michigan to Las Vegas, searching for improvements to his game.

[13] At The Ultimate Fighter 19 Finale on July 6, 2014, Lee got his first win for the promotion when he defeated Jesse Ronson by split decision.

[33] Chiesa appealed to the Oklahoma State Athletic Commission to overturn the defeat, claiming referee Mario Yamasaki erred both in stopping the fight despite no tapout nor loss of consciousness and in allowing Lee to use illegal downward elbows, which cut his head.

[42] Lee moved up to welterweight to face Rafael dos Anjos in the main event of UFC on ESPN+ 10 on May 18, 2019.

[48] Lee faced Charles Oliveira on March 14, 2020, as the main event at UFC Fight Night 170.

[57] Subsequently, Lee tested positive for Adderall and was suspended for six months, making him eligible to return into competition on February 28, 2022.

[58][59] In an interview, Lee stated that he thought the drug would be out of his system soon enough, which is why he didn't apply for therapeutic-use exemption regarding his medication for recently diagnosed ADHD.

[62] Lee made his debut against Diego Sanchez in a 165 lbs bout on March 11, 2022, at Eagle FC 46.

[66] Lee made his promotional return against Rinat Fakhretdinov on July 1, 2023 at UFC on ESPN 48.

[69][70] Lee made his return to mixed martial arts on September 28, 2024, at Lights Out Championship 17 against Thiago Oliveira in a welterweight bout.

[72] Lee was scheduled to make his bare-knuckle debut against Saul Almeida on November 15, 2024 at Gamebred Bareknuckle MMA 8.