Statement from the Sauber Formula 1 team.
"After Sergio Pérez‘s heavy accident in the final minutes of qualifying for the Monaco Grand Prix, of course, the relief that the 21-year-old Mexican didn’t suffer any serious injuries is the overriding emotion inside the Sauber F1 Team. He was taken to the Hospital Princesse Grace in Monaco where he underwent an extensive examination. The medical staff informed the Sauber F1 Team that he escaped the shunt with concussion and a bruised thigh. Pérez will remain in hospital at least overnight and will definitely not start the race on Sunday."
He was lucky they replaced the Armco with some other stuff. I have seen Jenson Button crash at the same place during practice in 2003 and he was not so lucky. His BAR was torn in half because he T-boned his car like Perez did, but there was a Armco in the way. Button escaped but was unconscious by the impact and did not race that weekend. Everyone was quite in the media centre when it happened because it looked very bad indeed, because most of us had seen Senna crash into the wall at Imola.....
Perez one day before....