Hamilton put in a dominant performance at the Spanish Grand Prix on Sunday, winning easily and showing Ferrari that Mercedes remains the team to beat in Formula One.
To finish a sorry afternoon for Ferrari, his teammate Kimi Raikkonen was pressured to retire, leaving Mercedes to take the lead within the constructors' championship with a 27-point benefit.
Mercedes has struggled compared to Ferrari at times this season, with Sebastian Vettel winning the opening two races and taking three consecutive pole positions as the Scuderia had a more consistent auto.
"I'm always on the worrying side and we'd been very good in winter testing here and when we went to Melbourne everybody said it was going to be an easy Mercedes one and then we had hard races so I think we were very good today but we need to stay calm and humble", Wolff said.
Sebastian Vettel has backed Ferrari's strategy at the Spanish GP despite losing two places through a second pit-stop, insisting the team had "no option" but to differ from their rivals.
The team principal, Toto Wolff, stressed the importance of the race for Hamilton.
Verstappen's stop nine laps later unleashed Hamilton and the Briton reeled off the remaining half of the race in a controlled fashion, to triumph at the Spanish Grand Prix for a third time.
"The team have been working very hard to understand the tyres and how the vehicle works, so I think it all came together this weekend".
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The result sees Hamilton stretch his lead at the top of the drivers' standings to 17 points after five races.
It also set a record, one that Hamilton had previously shared with seven times champion Michael Schumacher, of 41 wins from pole position.
"Monaco is a tough track so I just hope the weather's good there", added Hamilton. To tell you the truth, It wasn't the most nail-biting race except for the first lap.
Sergio Perez took on fresh tyres when his team-mate exited and moved up into ninth place, while Leclerc added another point to Sauber's tally by rounding out the top 10.
Meanwhile, in the United States Australian Will Power took his first IndyCar victory of the year at the Indianapolis road circuit. While recovering, he failed to realise that there were still cars around him. Sixth was Haas driver Kevin Magnussen, who helped convert the team's strong pace into a healthy haul of points.
Moments later the virtual safety auto was then called upon as Esteban Ocon parked his Force India with an engine problem.
"If you look from outside it's easier, but inside the vehicle, we were going through the tyres too quick".
Ferrari's Sebastian Vettel (right) after qualifying third for Sunday's Spanish F1 Grand Prix. "I was pushing every single lap using it as a test bench to understand what I liked about the balance and how can I play with it more and how can I squeeze more out of it and do all sorts to understand what more I can get from". A lap later, McLaren's Stoffel Vandoorne retired, propulsion lost out of the last corner.