Despite having escaped serious injury in his savage meeting with the barriers on the exit of the tunnel in Monaco, Sergio Perez will spend a second night in hospital as doctors ensure that he makes a full recovery from concussion.
The Mexican rookie slammed into the Tecpro barriers at the entrance to the waterfront chicane after losing control over a bump as he exited the tunnel, and qualifying was held up for half an hour as he was assessed and extracted from the cockpit. Despite a worrying time for those looking on from the pits, the GP2 Series runner-up was reported to be lucid and talking to medical teams as he was transported to the local hospital, where his injuries were confirmed as little more than concussion and a bruised thigh.
However, the team has since confirmed that, having spent a good night at the Hospital Princesse Grace and undergoing further medical examination on Sunday morning, doctors have requested that Perez remain under observation for another night before having a second brain scan on Monday.
Sauber has also said that it will conduct its own investigation into the cause of the accident, despite Perez appearing to have been pitched into the barriers by a bump in the road between the tunnel and the chicane. However, it is the fact that the 21-year old Mexican exited the tunnel on an exceptionally wide line that is of concern to the team, especially as the lack of grip off-line, amid the dust and 'marbles', could have contributed to the accident.