JACKSONVILLE, Fla. (AP) — The Jacksonville Jaguars are turning to rookie quarterback Blaine Gabbert.

Coach Jack Del Rio named Gabbert the starter Wednesday, switching signal callers three days after Luke McCown threw four interceptions against the New York Jets.

Del Rio met with Gabbert and McCown on Wednesday morning, then told other players about the switch at a team meeting. Gabbert will start Sunday at Carolina.

The transition was inevitable since the Jaguars selected Gabbert with the 10th pick in April’s draft. Del Rio had hoped to take it slow with the former Missouri standout, even planning to give him a year to watch and learn behind David Garrard. But Garrard had his worst preseason as a starter and was outplayed by McCown, a career backup.

Del Rio named McCown the starter five days before the season opener. But his ninth career start was a debacle. He was picked off four times, and could have thrown a couple more, and was sacked for a safety — in just three quarters.

Gabbert replaced McCown to start the fourth, and completed 5 of 6 passes for 52 yards in relief.

Gabbert threw 40 touchdown passes and 18 interceptions as a two-year starter at Missouri.