Source: The Wrestling Observer

Dolph Ziggler suffered a concussion during his WWE Superstars match with Ryback last night. It is believed that the concussion came from an overly stiff clothesline. Ziggler will be out of action until he can pass the company's testing.

This is the second concussion for Ziggler in the last year. Ziggler suffered a concussion last year after WrestleMania during his world title run.