Claimed four top-25 finishes on the PGA TOUR, highlighted by a solo-fourth at the Corales Puntacana Resort & Club Championship, ending his season at No. 149 in the FedExCup standings. Competed in all four Korn Ferry Tour Finals events, picking up four top-15 finishes, including a win at the season-ending Web.com Tour Championship. With his victory, finished No. 1 on the 2018 Korn Ferry Tour Finals money list, earning exempt status on the PGA TOUR for the 2018-19 season as well as a spot in the 2019 PLAYERS Championship field. Also entered the 2018-19 season with two available starts under the Minor Medical Extension category to earn 110 FedExCup points, looking to match or better No. 125 Seamus Power's 377 and move in to the Top 125 category.

Finished solo-fourth at the Corales Puntacana Resort & Club Championship, marking the first time in 13 career starts on TOUR that he completed a tournament with four under-par rounds (66-69-71-70). Previous best finish on TOUR came as an amateur at the 2015 U.S. Open (T42).

Replaced Martin Piller in the Zurich Classic of New Orleans when Piller withdrew before Thursday's first round. Teamed with Piller's original partner, Joel Dahmen, to finish T25, but made history as the first team to tee off Saturday with walk-up music at a PGA TOUR event. Song selection for the duo was "I'm Alright" by Kenny Loggins – made famous in the "Caddyshack" movie soundtrack.

Opened the Nationwide Children's Hospital Championship with a 5-under 66. Finished the week T5.

Finished T9 at 8-under 272 at the DAP Championship presented by NewBrick, earning his return to the PGA TOUR in the process after a T5 the week before at the Nationwide Children's Hospital Championship.

Posted rounds of 64-65-67-65–261 (-23) at the Web.com Tour Championship to pick up his first Korn Ferry Tour victory by four strokes. Secured his spot as the 2018 Finals money list leader with his finish.