Daniel Ricciardo has had a sharp decline since his peak F1 years at Red Bull. Let's examine the theories to explain where it all went wrong.

Daniel Ricciardo’s shocking mid-season return to the Formula 1 grid a year ago had the makings of the latest dream ending in the sport. But as the grid arrived in Singapore for this weekend’s Singapore Grand Prix, that dream ending seems to have the feeling of a last stand.

The three-time world champion was called to see the stewards in Singapore following the first free practice session on Friday, after which the FIA announced that he was in breach of their international sporting code and would be forced to undertake duties similar to community service within F1.