No. 2: Texas Tech vs. TCU in 2015 (Attendance: 61,283)
If there was one game that might have turned the tide for Kingsbury during his time as head coach, it was likely the 2015 home game against No. 3 TCU. Coming off of a road win at Arkansas and with Mahomes entrenched as the starter, there was a lot of momentum for the 3-0 Red Raiders as they hosted the undefeated Horned Frogs.
What would unfold that September Saturday night would prove to be one of the classic games in program history. But the problem is that the ball literally wouldn't bounce the home team's way.
With Tech leading 52-48 with 23 seconds to play, TCU faced a 4th-and-goal at the Tech 4-yard line. That's when a deflected pass from TCU QB Trevone Boykin would float into the air and nestle into the arms of a diving Aaron Green in the back of the endzone for the game-winning score to silence the massive Red Raider crowd.
That was one of four TD passes for Boykin in the 55-52 win. Meanwhile, Mahomes would throw for two scores and 392 yards while RB DeAndre Washington would rack up 188 yards and four TDs himself in a losing effort.
That game seemed to take the air of out the Red Raiders. The next week, No. 5 Baylor would rock the Red Raiders 63-35 in Arlington, Texas and Tech would drop five of its next seven games. One can only wonder how different that season and the Kingsbury era might have been had the ball bounced a different way that night at Jones Stadium.