On October 5, he was named Big 12 Co-Offensive Player of the Week, after posting career-best totals of 6 receptions for 138 yards and four receiving touchdowns in the Horned Frogs' 50–7 win over the University of Texas.

[9] He was second in the Big 12 and tied for 14th nationally with his 27-yard average in kickoff returns, the highest mark by a Horned Frog since Greg McCoy in 2011 (30.6).

On September 6, he was named the Big 12 Special Teams Player of the Week after having an 81-yard punt return for a touchdown (sixth longest in school history) in the season opener against South Dakota State while also having 7 receptions for 62 yards, 177 all-purpose yards (82 punt returns, 62 receiving, 33 rushing).

He was named Big 12 Special Teams Player of the Week against the University of Kansas for returning three punts for 95 yards and a touchdown.

[5] As a senior, Turpin played much of the season[15] with a warrant out for his arrest from failure to appear to a domestic violence charge in New Mexico.

[16] Gary Patterson and the TCU Coaching staff were aware of the spring break arrest, but failed to investigate it and claim they did not know about the outstanding warrant.

On September 10, he was named the Big 12 Special Teams Player of the Week, after having a 78-yard punt return for a touchdown, making it the fourth of his career and a school record.

In 2019, Turpin was ruled ineligible to participate in TCU's Pro Day, forcing him to hold his own workout, where he put up a 40-yard dash time of 4.31 seconds.

[23] After not being selected in the 2019 NFL draft and not getting an opportunity to play in two years because of off-the-field problems, he signed with the Frisco Fighters of the Indoor Football League in 2020.

In August 2021 season, the Panthers Wrocław of the European League of Football (ELF) based in Poland, signed him mid-season as a replacement for injured running back Mark Herndon.

[25] There he won 3 out of 4 regular season games with an important win over the Hamburg Sea Devils, where he registered 293 yards of total offense and two touchdowns.

He was cut from the TCU football program by Gary Patterson shortly after he was informed of this second battery charge against him.

[36] Despite Patterson and the TCU Coaching staff knowing about his previous assault, he was allowed to continue to play throughout the 2018 season until he committed the second offense against the same woman.

[17] As part of his plea agreement, he served two years deferred adjudication probation and completed a 27-week Partner Abuse Intervention Program.