Former world champion Nigel Mansell believes that Ferrari's recent momentum is great for Formula 1 after so much Mercedes dominance.
Sebastian Vettel took a dominant victory in Singapore - his third of the season - as Mercedes struggled for pace.
The German is 49 points behind Lewis Hamilton and just eight behind Nico Rosberg in the standings with six races to go.
1992 world champion Mansell, who drove for the Scuderia for two seasons in 1989-90, thinks that Vettel could capitalise should Mercedes suffer any more unreliability.
"I thought Seb and Ferrari were awesome and did a magnificent job (at Singapore) and it's wonderful for Formula 1," Mansell told Motorsport.com.
"I'm not quite sure what happened to Mercedes at the weekend, but they are obviously still a fantastic team.
"But, I do think in the later part of the race, if Lewis had not have had the problem, I think he would have challenged," he added.
"With 25 points for the win now, as opposed to what we used to get, it is an enormous bag of points," continued Mansell.
"Although there is incredible reliability now, you only need one or two problems, a DNF and someone gets a win and you can be caught, so it's not over and if Ferrari can keep their competitiveness it could be wonderful for them and wonderful for F1."