After securing their first podium of the season with Daniil Kvyat's impressive drive at the Chinese Grand Prix, Red Bull boss Christian Horner has warned Ferrari to watch out for them.
Apart from Kvyat’s third place finish, Horner said that if Daniel Ricciardo, who finished fourth ahead of Kimi Raikkonen, hadn't suffered a tyre puncture in the early stages of the Chinese GP then he would have also been mingling with the front runners of the race.
Even without their upgrades, the 42-year-old believes that Ferrari should check their review mirror often as they are 'snapping at their heels'.
"Mercedes make no mistake they're still a step ahead," Horner told ESPN.
"But we're snapping at the ankles of Ferrari. Both our cars beat one of them. Sebastian wasn't so far up the road and I think a clean race from Ricciardo would've been seriously competitive. So it's been a really positive weekend for the whole team.
"To come away from [China] only giving one point away to Ferrari. I didn't expect that coming into the weekend. So a lot of positives. And we know hopefully with what's in the pipeline, it should put us that bit closer.
"Let's see it first. Pieces of paper are all very easy to look at but it's the stopwatch that doesn't lie. The guys both in Viry and in Milton Keynes are doing a great job and you can genuinely see the progress that's being made.
When quizzed about whether Canada will see Renault introduce their new engine, Horner answered: "Yes. Hopefully then we can really start to cause a bit of mischief ahead of us."