Rafael Duk

Rafael Duk Delgado (born 1962/63) is a Mexican gridiron football coach and former player who is the current head coach of the Burros Blancos IPN. He played college football with the , winning an ONEFA national championship in 1989. As a head coach, Duk won the 2000 ONEFA national championship with the Borregos Salvajes CEM before leading the Mexicas CDMX to a win in Tazón México III in 2018.

Playing career Duk played college football with the Pieles Rojas IPN at the guard position, representing the Instituto Politécnico Nacional from 1984 to 1989. He was a part of the 1989 ONEFA national championship team under head coach Manuel Rodero. He led the team to its historic first win in their opening game, beating the 39–27.

In 2000, Duk led the Borregos Salvajes CEM to another undefeated season and its first-ever ONEFA national championship, defeating the Borregos Salvajes Monterrey 38–28 in the 10 Grandes Conference final. He earned five consecutive ONEFA Coach of the Year awards from 1996 to 2000.

Duk won a championship in 2002 as head coach of the semi-pro Pieles Rojas A.C. He returned to the semi-pro ranks after that, coaching the Petroleros de Pemex in 2004 and the Pieles Rojas A.C. in 2005. In his first season, he led the team to a promotion to the top-tier 12 Grandes Conference after winning the second-tier National Conference title. Duk earned his sixth ONEFA Coach of the Year award and became the first head coach to achieve promotion to the top tier with two different teams.

Duk was subsequently offered the head coaching job of the Toros Salvajes Chapingo, but was unable to accept for personal reasons. In the league's inaugural season in 2016, the team finished the season with a 4–2 record and reached Tazón México I, the first edition of the LFA championship game, where they lost 29–13 to the Mayas CDMX.

In 2017, Duk led the Raptors to a 5–2 record and a first-place finish in the North Division, with league MVP Bruno Márquez at quarterback. However, they were eliminated in the first round of the playoffs after suffering a 13–10 defeat to the Dinos de Saltillo.

Mexicas CDMX In October 2017, Duk joined another LFA team, the Mexicas CDMX, as their new head coach. In his only season with the team, he led the Mexicas to its first league championship with a 17–0 victory over the Raptors de Naucalpan in Tazón México III after finishing the regular season with a 4–3 record.

Bulldogs de Naucalpan In September 2018, Duk was announced as the head coach of the Bulldogs de Naucalpan of the Liga de Football Pro (later Fútbol Americano de México), a new football league that began its inaugural season that February to compete with the LFA.

Búhos IPN In 2019, Duk was named the sixth head coach in the history of the Búhos IPN program, which was returning to Mexican football for the first time since 1985. In his first year at the helm, he led the team to an undefeated season capped off by a 41–15 victory over the Lobos Plateados IPN to win the league title. The 2020 season was cancelled due to the COVID-19 pandemic. In 2021, the Búhos returned to ONEFA, after a 36-year absence, as a member of its Center-South Conference. The Búhos subsequently won the third-tier National Central Conference title in 2022, defeating the 20–17 in the final.

Burros Blancos IPN Duk was named the head coach of the ahead of the 2023 season.

National team Duk served as the offensive coordinator for the Mexico national team at the 1999 IFAF World Championship held in Italy, helping the team win a silver medal.