Mercedes Formula One driver Lewis Hamilton of Britain celebrates his victory in the Italian Grand Prix in Monza yesterday.

DPA/Monza, Italy

Lewis Hamilton ruled the Italian Grand Prix from pole yesterday for a rare grand slam as he denied Ferrari a home race win and stretched his lead atop the Formula One championship.
The only scare for Hamilton came at the end when stewards investigated a possible tyre pressure infringement by the Mercedes team on both his and team-mate Nico Rosberg’s cars.
Hamilton’s left rear tyre pressure was found to be 0.3 psi below the minimum of 19.5, with the same tyre on Rosberg’s car 1.1 psi under, when measured before Sunday’s race.
But motorsport governing body FIA said no action would be taken after it was determined that the pressure was at the correct level when the tyres were fitted to the car.
FIA said the stewards were satisfied the team followed the currently specified procedure supervised by tyre manufacturer Pirelli for the safe operation of the tyres.
“Therefore the stewards decide to take no further action,” a statement said.
“Nevertheless, the stewards recommend that the tyre manufacturer and the FIA hold further meetings to provide clear guidance to the teams on measurement protocols.”
Hamilton cruised to his third Monza win, the seventh of the season and 40th overall ahead of Ferrari’s Sebastian Vettel and Felipe Massa of Williams under sunny Italian skies.
Hamilton achieved a second career grand slam, following Singapore 2014, at a race weekend by topping qualifying, leading every lap en route to the race win and posting the fastest race lap as well. He was also top in all three practice sessions.
“What we have achieved is amazing,” he said. “F1 is about running to the maximum. We won today because we were quickest.”
Vettel was the darling of the tifosi who flooded the track after the race, speaking of “best second-place I’ve ever had.”
Asked at the post-race news conference about the tyre pressure probe, Hamilton said “I wasn’t aware of it”, while Vettel appeared not too keen on possibly being declared winner when he said: “It’s all about fairness and respect. He did a better job today so we have to respect that.”
Before the news, the Briton was safe once he won the start where Kimi Raikkonen met disaster when his car stalled and he dropped from second on the grid to temporary last, before recovering to finish fifth.
Rosberg was running in third place before being stopped by what appeared a failure to the engine with two laps left which also marked a major setback for him in the title race.
F1 now leaves Europe for the remaining seven races in Asia and the Americas with the title holder Hamilton increasing his lead over the unlucky Rosberg by 25 points to 53. Hamilton has 252 points, Rosberg remained on 199 and Vettel has 278.
Ferrari and their fans had hoped for a first home race win in five years since Fernando Alonso’s success in 2010 when Raikkonen and Vettel were close behind Hamilton in qualifying in second and third place.
But Hamilton then won the start from his 11th season pole while Raikkonen’s car did not move when the lights went out and the Finn found himself last when he finally got going.
Rosberg lost three places from fourth on the grid because he had to round Raikkonen’s car, allowing the Williams of Massa and Valtteri Bottas to sneak past him, and so did Force India’s Sergio Perez whom however Rosberg passed for fifth soon afterwards.
Rosberg got ahead of the two Williams once they had pitted for the first time between lap 19 and 23.
Raikkonen meanwhile escaped a huge scare as Manor’s Roberto Merhi almost crashed into him from behind as they entered the pit lane in lap 30 for fresh rubbers.
Hamilton was some 20 seconds ahead of Vettel once they had also pitted, and in full control before being told with five laps left by the team to “pull the gap” and “don’t ask questions” - with the team aware of the tyre probe and the possibility of a time penalty.
Hamilton took the chequered flag in 1 hour 18 minutes 0.688 seconds, 25.042 seconds ahead of Vettel.
Massa crossed the line in third place just ahead of Bottas after Rosberg’s mishap in the 51st of 53 laps.

Results and Standings
Result of the Italian Formula One Grand Prix at Monza yesterday: 
1. Lewis Hamilton (GBR/Mercedes) 1hr 18min 00.688sec, 2. Sebastian Vettel (GER/Ferrari) at 25.042sec, 3. Felipe Massa (BRA/Williams) 47.635, 4. Valtteri Bottas (FIN/Williams) 47.996, 5. Kimi Raikkonen (FIN/Ferrari) 1:08.860, 6. Sergio Perez (MEX/Force India) 1:12.783, 7. Nico Hülkenberg (GER/Force India) 1 lap, 8. Daniel Ricciardo (AUS/Red Bull) 1 lap, 9. Marcus Ericsson (SWE/Sauber AG) 1 lap, 10. Daniil Kvyat (RUS/Red Bull) 1 lap, 11. Carlos Sainz Jr (ESP/Toro Rosso) 1 lap, 12. Max Verstappen (NED/Toro Rosso) 1 lap, 13. Felipe Nasr (BRA/Sauber AG) 1 lap, 14. Jenson Button (GBR/McLaren) 1 lap, 15. Will Stevens (GBR/Marussia) 2 laps, 16. Roberto Merhi (ESP/Marussia) 2 laps, 17. Nico Rosberg (GER/Mercedes) 3 laps, 18. Fernando Alonso (ESP/McLaren) 6 laps
Retired: Pastor Maldonado (VEN/Lotus): 2nd lap, Romain Grosjean (FRA/Lotus): 2nd lap, Fernando Alonso (ESP/McLaren): 48th lap, Nico Rosberg (GER/Mercedes): 51th lap 
Overall standings (Top 10)
Drivers
1. Lewis Hamilton (GBR) 252.0pts, 2. Nico Rosberg (GER) 199.0, 3. Sebastian Vettel (GER) 178.0, 4. Felipe Massa (BRA) 97.0, 5. Kimi Raikkonen (FIN) 92.0, 6. Valtteri Bottas (FIN) 91.0, 7. Daniil Kvyat (RUS) 58.0, 8. Daniel Ricciardo (AUS) 55.0, 9. Romain Grosjean (FRA) 38.0, 10. Sergio Perez (MEX) 33.0
Constructors
1. Mercedes 451.0pts, 2. Ferrari 270.0, 3. Williams 188.0, 4. Red Bull 113.0, 5. Force India 63.0, 6. Lotus