The Williams mechanic hit by the flying wheel from Nico Rosberg's car escaped serious injury after the incident during the Hungarian Grand Prix.
Rosberg's right rear tire became loose right as the German Mercedes driver was joining the pitlane following his pitstop. The wheel careered down the pitlane and knocked down Williams's pit crew member Nigel Hope.
Hope sustained some injuries but returned to resume duties for the second stop of the race following a precautionary visit to the medical center.
The Mercedes team was fined $50,000 for the unsafe release of Rosberg.