Precautionary X-rays coming for Heyward-Bey

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Raiders receiver Darrius Heyward-Bey has exited Oakland’s game at the Metrodome with a head/neck injury.

Per a league source, Heyward-Bey is being taken to a local hospital for precautionary X-rays.

Heyward was moving his extremities after taking a knee to the head, which knocked his helmet off.

UPDATE 6:10 p.m. ET:  Heyward-Bey will be flying back to Oakland with the Raiders, per a league source.