Derek Carr has apologized to the Las Vegas Raiders, saying he failed to give them the best version of himself last season.

"They just didn't get my best and that drove me crazy at the end of the year because I felt so spread out in so many different ways," Carr said. "I just didn't feel like myself and I feel bad for the [Raiders] coaches and players."

Carr finished last season with his worst passer rating (86.3) since his rookie season of 2014. He threw 14 interceptions.

He blamed his self-described regression on a combination of professional and personal challenges.