Mark Webber takes a ride with Fernando Alonso after bowing out of the Singapore Grand Prix. (Photo: Getty Images)

takes a ride with after bowing out of the . (Photo: Getty Images)

Mark Webber’s recent 10-place grid penalty has put a focus on the ‘three-strikes’ system, introduced in to give some meaning to the previously rather pointless awarding of reprimands.

Webber was unlucky enough to be the only driver to already have two in his 2013 account. So who else has earned one this year and thus has to be a little careful? Here’s the full list, in alphabetical order:

Fernando Alonso, Stopping on the track (Singapore, Race)

Jules Bianchi, Failing to stop for the weighbridge (GB, Qualifying)

Valtteri Bottas, Failure to slow for yellow flags (Canada, FP1)

Paul Di Resta, Causing a collision (Italy, Race)

, Failure to enter the pit lane correctly [bollard] (Belgium, FP2)

Charles Pic, Re-joining the track in an unsafe manner (Belgium, FP2)

, Below minimum time for SC lap (Monaco, Race)

, Failure to slow for yellow flags (GB, Race)

Adrian Sutil, Driving unnecessarily slowly in the pit entry (Australia, Qual)

In addition, Lotus has two reprimands: for an unsafe release in FP2 at Silverstone, and because a team member (actually a Renault engineer) was not wearing a helmet during Romain Grosjean’s stop in Singapore. Although there is no totting-up system for teams, a repeat of a similar offense could earn a stiffer penalty.