No matter how he reckoned that, it meant a serious concussion - for which the only cure was rest.

The explosions were "stunning", and the ship suffered a serious concussion.

In his rookie season Smith suffered a serious concussion November 22, 2009.

He was hospitalized in Germany with a serious concussion.

I am completely confident that without the helmet he would have had a serious concussion at the very least, and quite likely have been killed.

Vaske missed 63 games last season with a serious concussion.

He lost blood, and probably had a serious concussion.

Paul Kariya's recovery from his most serious concussion will keep everyone's fingers crossed.

He suffered a rather serious concussion, along with some nasty internal injuries.

His professional career was cut short in 1999 due to a serious concussion.