The Horned Frogs inked 21 high school seniors to National Letters of Intent and added two additional playmakers by grayshirt.

[1] Hoping to build on the success of the new up-tempo offense installed by Co-offensive coordinators Doug Meacham and Sonny Cumbie in 2014, the 2015 signing class included six wide receivers.

Sources: In addition to the above-listed signees, TCU added consensus 3-star wide receive Darrion Flowers (5'9", 170, Sam Houston HS, Arlington, TX), who accepted a track and field scholarship for 2015–16 and will join the football team before the 2016 season.

Similarly, TCU added kicker Jonathan Song (5'9", 160, All Saints HS, Fort Worth, TX), who will also grayshirt during the 2015–16 season and count against the 2016 recruiting class.

It was widely reported in early 2015 that former Southlake Carroll standout and Gatorade Football Player of the Year[2][3] Kenny Hill would transfer from Texas A&M to TCU before the 2015 season.

[12] In July, TCU was selected as the overwhelming favorite to win the Big 12 regular season crown,[13] and Trevone Boykin emerged as the frontrunner in the 2015 Heisman Trophy race.

Rumors of injuries sustained by starting wide receivers Josh Doctson and Deante Gray, as well as starting defensive tackle Davion Pierson were unconfirmed, and Patterson revealed in late August that Doctson would likely play in the opener at Minnesota while Gray's readiness for the September 3 game remained questionable.

TCU was one of only three consensus-top 25 teams to play a true road game against a Power 5 Conference opponent in week one, joining the #1 Ohio State Buckeyes at Virginia Tech and the #20 Stanford Cardinal at Northwestern.

TCU's top Heisman Trophy candidate, quarterback Trevone Boykin, accounted for 510 yards and 5 touchdowns.

After the game, the Frogs entered their sole mid-season bye week sitting at first place in the Big 12 Conference standings.

TCU hosted WVU on a Thursday night in Fort Worth following the Frogs' only mid-season bye week.

The Frogs' 30-point win marked the first time in four Big 12 meetings that the winner of the TCU–WVU game was not decided on the final play.

Josh Doctson broke the TCU record for receptions in a season with his 67th grab in only the Frogs' eighth game of 2015.

The Horned Frogs 16-game winning streak (dating back to October 2014) and undefeated season came to an end in Stillwater, Oklahoma.

Leading TCU receiver Josh Doctson exited the game early with a wrist injury that took away the Horned Frogs' most dangerous deep threat.

TCU improved to 9–1 (6–1) on the season and remained perfect against the Jayhawks since joining the Big 12 Conference, but Heisman-contending quarterback Trevone Boykin left the game with an ankle injury in the first quarter and did not return.

The top-20 matchup between two 9–1 teams came ten years after the shocking TCU win in Norman that propelled the rise of the Horned Frogs on the national stage.

TCU played without its starting quarterback and preseason Heisman Trophy favorite Trevone Boykin after he suffered an ankle injury early in the Frogs' game against Kansas on November 14.

The Horned Frogs closed their regular season with a two-overtime victory of the Baylor Bears, evening the most-played series in both programs' history at 52–52–7.

The matchup between the two defending Big 12 co-champions was highly anticipated since Baylor stunned the Frogs with a 21-point, fourth-quarter comeback in 2014. at Alamodome • San Antonio, TX Third Overtime