Dieter attended and played college football at three different schools. He started his collegiate career at SMU in the 2012 season. He transferred to Bowling Green, where he played from 2013–2015. He redshirted for the 2013 season. Dieter made his collegiate debut against Western Kentucky on August 29, 2014. Against the Hilltoppers, he had seven receptions for 78 receiving yards in the 59–31 loss. On December 5, against Northern Illinois, he had two receptions for 56 receiving yards and his first collegiate receiving touchdown, a 42-yard reception from James Knapke, in the 51–17 loss in the MAC Championship. On December 20, against the South Alabama Jaguars in the 2014 Camellia Bowl, he had seven receptions for a season-high 108 receiving yards in the 33–28 victory. Overall, in the 2014 season, he had 35 receptions for 460 yards and one touchdown. He finished fourth on the team in receptions, fourth in receiving yards, and tied for fourth in receiving touchdowns. The 2015 season was a breakout season for Dieter. With Matt Johnson at quarterback, Dieter and Roger Lewis combined to be a solid receiver combination for the Falcons. In the season opener, against the Tennessee Volunteers, he had seven receptions for 133 receiving yards and a receiving touchdown in the 59–30 loss at Nissan Stadium. In the next game, against Maryland, he was held to one reception, a 14-yard touchdown reception in the 48–27 victory. On November 4, against the Ohio Bobcats, he had nine receptions for 136 receiving yards and two receiving touchdowns in the 62–24 victory. On November 17, against Toledo, he had 13 receptions for 103 receiving yards and three receiving touchdowns in the 44–28 loss. Overall, in the 2015 season, he had 94 receptions for 1,033 yards and ten touchdowns. He led the team in receptions, finished second in receiving yards, and second in receiving touchdowns. Dieter transferred to Alabama for the 2016 season under head coachNick Saban. He joined a receiving unit that already had the talents of Calvin Ridley, ArDarius Stewart, and O. J. Howard among others. In the season opener against Southern California, he had a 45-yard receiving touchdown from Blake Barnett in the fourth quarter of the 52–6 victory at AT&T Stadium. On November 19, against Chattanooga, he posted an odd statistical line of three receptions for one receiving yard and two receiving touchdowns in the 31–3 victory. In the SEC Championship, against the Florida Gators, he had a six-yard receiving touchdown in the 54–16 victory. In the semifinal round of the College Football Playoff, the 2016 Peach Bowl, he had a ten-yard reception in the 24–7 victory. He had 15 receptions for 214 yards and four touchdowns in his final collegiate season.
Collegiate statistics
Professional career
Dieter was signed by the Kansas City Chiefs as an undrafted free agent on May 6, 2017. He was waived on September 2, 2017, and was signed to the Chiefs' practice squad the next day. On January 8, 2018, he signed a reserve/future contract with the team. On September 1, 2018, Dieter was waived by the Chiefs and was signed to the practice squad the next day. He was promoted to the active roster on November 18, 2018. Dieter made his NFL debut on December 2, 2018 against the Oakland Raiders, recording one tackle on special teams. In the regular season finale against the Oakland Raiders, he recorded his first professional reception, which went for 22 yards, in the 35–3 victory. In the 2018 season, the Chiefs finished with a 12–4 record and made the playoffs. In the Divisional Round against the Indianapolis Colts, he made his first postseason reception, which went for 11 yards, in the 31–13 victory. On August 31, 2019, Dieter was placed on injured reserve. He was waived from injured reserve with an injury settlement on September 7. He was re-signed to the practice squad on October 15. He was promoted to the active roster on November 18, 2019. He was waived on December 3, 2019 and re-signed to the practice squad. Dieter won his first Super Bowl championship after the Chiefs defeated the San Francisco 49ers in Super Bowl LIV. He re-signed with the Chiefs on February 11, 2020.
Personal life
Dieter married his wife on May 11, 2019. Multiple Chiefs players were in attendance at the wedding.
