An upgrade package that Red Bull introduced at the Emilia Romagna Grand Prix, which revolved around aero tweaks and weight reduction, appears to have given the team a pace advantage.
Verstappen dominated the Imola weekend, despite a poor start in the sprint, and triumphed again in Miami last weekend to further close down the early points advantage that Charles Leclerc had opened up.
Ferrari has so far held back on introducing any upgrades but is expected to bring its first major development package for the next race in Spain.
But while Red Bull appears to have gained momentum in its championship charge, Ferrari team principal Mattia Binotto insists he is not too alarmed by the situation.
“In terms of performance assessments, and how much they [Red Bull] developed compared to us, is that a concern? I would say not,” he said.
“I don’t think the difference is huge. It is a matter of maximum a couple of tenths and we should not forget that [in Miami] we locked the front row.
“In qualifying we had a better performance compared to the Red Bull, so overall, in a weekend, I don’t think there is much difference between the Red Bull and the Ferrari.
“If there is a concern, it is how much they are developing considering the budget gap. But more than a concern, maybe it is a hope because at some stage they will need to stop.”
As well as there being a small pace difference between the Ferrari and the Red Bull, the biggest contrast is actually in how the two cars achieve their lap time.
The Red Bull has typically been faster on the straights, while Ferrari has enjoyed the edge in corners.
However, Leclerc thinks that Ferrari perhaps needs to dig deep into understanding why its tire degradation now appears to be worse than Red Bull when early on it had been a key strength.
“In a race especially on the softer compounds, the medium and the soft, it seems that it’s been already two races that in terms of race pace, they seem to be a bit stronger and managing those tires better,” he said.
“In qualifying, we always managed to put those tires in the right window, which helps us. But on the long runs, we struggle a bit more compared to them.”