Lebby helped lead quarterback McKenzie Milton to his second American Athletic Conference Offensive Player of the Year honor, after throwing for 2,663 yards and 25 touchdowns on a 59.2 completion percentage. Milton's passing efficiency of 160.97 was the fourth best in UCF history and ranked ninth in the nation. Milton ranked third nationally with 15.57 yards per completion and finished sixth in the Heisman Trophy voting.
Lebby’s skills were put to the test when Milton was sidelined for the ECU game midway through the year, which meant that backup quarterback Darriel Mack Jr. took the reins against the Pirates. Nearly breaking the single-game record for rushing yards by a quarterback, Mack excelled on the ground with 120 yards and one score on 22 carries, while having a nice game in the air with 12-for-20 passing for 69 yards.
Midway through the second quarter of the South Florida game, Lebby faced another challenge when Milton went down with a season-ending injury, meaning that Mack would have to preserve the Knights’ unbeaten streak. With a week to prepare the redshirt freshman for the American Athletic Conference Championship Game against Memphis, Lebby turned Mack loose against the Tigers, as he threw for a pair of touchdowns on 19-of-27 passing for 348 yards and tied the school record with four rushing touchdowns.
The quarterbacks helped UCF break the program's single-season record for rushing yards with 3,448, guided the offense to 522.7 yards of total offense per game to rank fifth nationally and threw for a combined 257.5 yards passing per game in 2018.
Lebby came to Orlando after one season as offensive coordinator at Southeastern University in Lakeland. Lebby helped lead Southeastern to a 5-0 conference mark and a berth in the NAIA playoffs last season. Southeastern had the No. 1 scoring offense and the No. 3 total offense in the NAIA in 2017.
Prior to joining the Southeastern staff, Lebby served in various capacities on the football staff at Baylor. He was the passing game coordinator and offensive recruiting coordinator for two years. He coached the running backs for five years. Prior to those roles, Lebby was the assistant director of football operations in charge of offensive quality control, while also serving as the team's liaison to the NFL.
In five seasons as running backs coach, Lebby coached five 1,000-yard rushers. Baylor's 2015 squad ranked No. 2 in the nation in rushing offense, while two Bears went over 1,000 yards that season. Lebby earned 2013 FootballScoop Running Backs Coach of the Year honors after coaching Baylor's first back-to-back 1,000 yard rusher.
Prior to his tenure at Baylor, Lebby served as the offensive line/tight ends coach at Victoria Memorial (Texas) High School. Lebby played high school football for his father Mike Lebby at Andrews (Texas) High and earned all-state honors as a senior. He signed with Oklahoma, but an injury ended his playing career. He then spent four years at OU as a student assistant coach.
Lebby earned a bachelor's degree from Oklahoma in 2007.