Kirk attended Saguaro High School in Scottsdale, Arizona, where he played high school football. He played both wide receiver and running back for the Sabercats. He gained over 3,000 all-purpose yards as a senior and 2,000 as a junior. Kirk was rated by Rivals.com as a five-star recruit and was ranked among the top overall prospects in his class. He committed to Texas A&M University to play college football.
College career
Kirk attended and played college football at Texas A&M under head coachKevin Sumlin. Kirk earned a starting job at receiver as a true freshman in 2015. In his first game, he had 6 receptions for 106 yards with a touchdown and also returned a punt 79 yards for a touchdown. As a freshman in 2015, Kirk played 13 games with 1,009 receiving yards and seven touchdowns. He also had two return touchdowns on 14 punt returns for 341 yards and 20 kickoff returns for 385 yards. As a sophomore in 2016, Kirk played 13 games with 928 receiving yards and nine touchdowns. He also had three return touchdowns on 13 punt returns for 282 yards and 6 kickoff returns for 173 yards. In 2017, as a junior, he played in 13 games, catching 71 passes for 919 yards and 10 touchdowns, along with one touchdown on 10 punt returns for 191 yards and one touchdown on 22 returns for 490 yards. After the season, Kirk declared for the 2018 NFL Draft.
Collegiate statistics
Professional career
2018
Kirk was drafted by the Arizona Cardinals in the second round of the 2018 NFL Draft. He was the fifth wide receiver to be selected that year. In the Cardinals' season-opening loss to the Washington Redskins, Kirk had a four-yard reception to go along with two punt returns for 44 net yards in his NFL debut. In Week 3, he recorded a solid game with seven receptions for 90 yards in the 16–14 loss to the Chicago Bears. In Week 5 against the San Francisco 49ers, he caught a 75-yard touchdown bomb from fellow rookie Josh Rosen to help the Cardinals earn their first win of the season by a score of 28–18. He played in 12 games, starting seven, recording 43 receptions for 590 yards and three touchdowns. He suffered a broken foot in Week 13 and was placed on injured reserve on December 3, 2018.
2019
In Week 2 against the Baltimore Ravens, Kirk caught six passes for 114 yards as the Cardinals lost 23–17. In Week 10 against the Tampa Bay Buccaneers, Kirk caught 6 passes for 138 yards and three touchdowns in the 30–27 loss. Overall, Kirk finished the 2019 season with 68 receptions for 709 receiving yards and three receiving touchdowns.
Personal life
On May 14, 2018, it was revealed that Kirk was arrested for disorderly conduct and causing property damage in Scottsdale, Arizona, which occurred on February 3, more than two months prior to the draft. Kirk allegedly threw rocks at cars while attending the Waste Management Phoenix Open at TPC Scottsdale. Kirk was deemed to be intoxicated during the incident. On May 29, 2018, all charges against Kirk were dropped.