Derek Carr and the Oakland Raiders have finalized a five-year, $125 million extension.

Carr, 26, is now under contract through 2022. His extension's average salary of $25 million will make him the NFL's highest-paid player in terms of new money average.

Carr's deal could potentially be backloaded until the Raiders move to Las Vegas; there is no state tax in Nevada, whereas California's tax rate is 13.3 percent. Carr could save hundreds of thousands of dollars, if not millions.

Carr passed for 3,937 yards and 28 touchdowns with just six interceptions last season.