Doughty attended North Broward Preparatory School in Coconut Creek, Florida. During his career as the starting quarterback he passed for 2,885 yards with 23 touchdowns and 12 interceptions. Rated as a three-star recruit by both ESPN and Rivals.com, Doughty was named an FACA North-South All-Star, a Dade-Broward All-Star and was named to the First-Team All-Broward County by the Miami Herald and the Sun-Sentinel. Originally, Doughty had committed to Florida Atlantic before signing with WKU for the 2010 recruiting class.
College career
2010
Doughty redshirted the 2010 season.
2011
Doughty made his college football debut for the Hilltoppers in a 40–14 loss to Navy. Making a relief appearance, Doughty completed 12 of 21 passes for 102 yards, no touchdowns and an interception. Still, his performance was enough to earn him the starting job the next week at home against Indiana State. However, after only three plays, Doughty suffered a knee injury which ended his freshman season.
2012
As a redshirt sophomore, Doughty saw limited action as a relief quarterback, appearing in two games against Austin Peay and Southern Miss. In these games, Doughty completed one of three pass attempts for seven yards.
2013
Regaining his starting job as a redshirt junior, Doughty set many records during the 2013 season. Among the new records were single-season passing yards, single-season completion percentage, and single-game completions and passing yards. Overall, Doughty finished the 2013 season completing 246 of 374 attempts with 14 touchdowns and 14 interceptions.
2014 was the Hilltoppers' first season as a member of Conference USA. Doughty broke his previous records for single-game completions and passing yards. Playing only one game with a completion percentage below 58.3 or a passer rating lower than 119.9, Doughty and WKU finished the regular season with a 7–5 overall record. On December 10, Doughty was named Conference USA's Most Valuable Player, the same day it was announced that the NCAA had granted him a sixth year of eligibility. The next day, on December 11, Doughty was announced as the winner of the 2014 Sammy Baugh Trophy, becoming the first Hilltopper and only the third quarterback from Conference USA to do so. On December 24, Doughty led the Hilltoppers to a 49–48 victory over Central Michigan in the 2014 Bahamas Bowl, completing 31 of 42 pass attempts for 486 yards, five touchdown passes and no interceptions en route to being named the Offensive MVP for the game. Overall, for the season Doughty completed 375 of 552 passing attempts for an FBS-leading 4,830 yards and 49 touchdowns and only ten interceptions, picking up a quarterback rating of 167.1.
2015
Doughty completed 356 of 541 passes for 5,055 yards with 48 touchdowns. His 5,055 yards in the 2015 season broke his previous record for most yards in a single season. From the beginning of the 2014 season to the end of the 2015 season he threw for 97 touchdowns, more than any other quarterback in a two-year span in NCAA history. Doughty finished his career in the top 25 in NCAA history for career passing yards, passing touchdowns, and completion percentage. Doughty played in the 2016 East-West Shrine game prior to the 2016 NFL Draft.
Doughty was drafted in the seventh round of the 2016 NFL Draft by the Miami Dolphins with the 223rd pick, acquired in a trade that sent Jamar Taylor to the Cleveland Browns. He was released by the Dolphins on September 14, 2016. He was signed to the team's practice squad on September 16. He signed a reserve/future contract with the Dolphins on January 10, 2017. On September 2, 2017, Doughty was waived by the Dolphins and was signed to the practice squad the next day. He signed a reserve/future contract with the Dolphins on January 1, 2018. On April 4, 2018, Doughty was waived by the Dolphins.
