Derek Carr couldn’t wait to celebrate his go-kart victory over teammate and best friend Khalil Mack on Friday.

The Raiders opted not to practice and instead went go-karting, and the quarterback emerged with the fastest time.

Carr caught an unsuspecting Mack on video after the race, and the reigning Defensive Player of the Year took the ribbing in stride, after briefly trying to knock his QB’s phone away.

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