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Mercedes' British driver Lewis Hamilton powers his car during a free practice at the Autodromo Jose Carlos Pace, or Interlagos racetrack, in Sao Paulo ahead of Brazil's Formula One Sao Paulo Grand Prix. Brazil will hold its F1 Sao Paulo Grand Prix tomorrow. Image Credit: AFP

Sao Paulo: World champion Lewis Hamilton dominated qualifying at the Brazil Grand Prix yesterday but then found himself facing demotion to the back of the grid for today’s sprint race after Mercedes were placed under investigation for a potential breach of technical rules.

Hamilton edged out title rival Max Verstappen for first place on the grid for the 24-lap sprint which in turn decides the starting order for tomorrow’s race at Interlagos.

However, race stewards were investigating whether or not the DRS system (the flap mounted on the rear wing of the car which opens to gain top speed) had exceeded allowed limits.

Title race

Seven-time world champion Hamilton, who trails Verstappen by 19 points in the title race, had already been hit with a five-place grid penalty for the main event after the engine was changed on his Mercedes.

“I’m so happy to be back in Brazil. Just a big thank you to all the team, they’ve been working flat-out. Today was a really good qualifying,” said Hamilton before the investigation was launched.

“It’s been so long - it’s like the first time,” added the 36-year-old who had not set the fastest time in qualifying since Hungary in August.

However, aware that Verstappen has won the last two races in the United States and Mexico, he added, “I don’t know how we can go from one track where they are half a second quicker to this.”

The Briton posted a fastest time of 1min 07.934sec, four tenths quicker than his Dutch rival.

“When they take a new engine naturally they have a bit more power for the weekend, so for me it’s not a big shock,” said Verstappen.

Good position

“I’m just happy to be second. It’s a good position to start from - we want to be closer, but sometimes you have to be realistic and I don’t think there was any more in it. There’s not that many points in the sprint race so I hope to have good first lap and of course start from first on Sunday.”

After tomorrow’s race, only three rounds remain in Qatar, Saudi Arabia and Abu Dhabi.

The two title rivals’ right-hand men Valtteri Bottas and Sergio Perez will start on the second row today.

Pierre Gasly of AlphaTauri, Ferrari’s Carlos Sainz and Charles Leclerc, McLaren pair Lando Norris and Daniel Ricciardo and also two-time world champion Fernando Alonso, in an Alpine, fill out the top ten.