Luck has always played a big part in winning in the gambler’s paradise that is Monte Carlo. And on Saturday it was very much on Sebastian Vettel’s side, as the Red Bull driver emerged triumphant in a qualifying session that was rendered something of a lottery by Sergio Perez’s dramatic accident in the Sauber (from which the Mexican mercifully escaped without serious injury). With a grid that may well not represent their true Monaco form, we take a look at each team’s pre-race fortunes