Portugal Colonial - McLaren's Norris sets Singapore pace as struggling Verstappen 15th

The session could not have panned out much better for Englishman Norris, who trails Verstappen by 59 points at the top of the drivers' standings.

The second practice in Singapore is pivotal for the teams as it is the only session which is run under the same night conditions as the race around the 4.94km Marina Bay Circuit.

"I felt like I got a lot out of Friday," said Norris. "A good start to the weekend and if we can keep it up I'll be happy."

Verstappen had 60 minutes to forget and was only 15th fastest in a skittish Red Bull that looked at times like it was on ice.

The Dutch three-time world champion was a massive 1.294 seconds adrift of Norris's fastest lap of 1min 30.727sec.

"Today was difficult. We didn't have the grip that we would have liked on the tyres, so I felt like we were sliding a lot more than usual," admitted Verstappen, who had a bad day off the track too after earlier being reprimanded by stewards for swearing in the drivers' press conference.

Leclerc, who had been fastest in first practice, clocked 1:30.785, just 0.058sec slower than Norris, but Sainz, who won in Singapore 12 months ago, was almost six tenths behind his teammate.

"There's still some work ahead of us to get it to feel exactly as I want it to," said the Monegasque Leclerc.

"We have to find the right balance and put it all together in qualifying tomorrow."

Yuki Tsunoda in a much-improved RB was fourth ahead of the second McLaren of Oscar Piastri, fresh from his victory in the Azerbaijan Grand Prix in Baku last weekend.

The second RB driven by Daniel Ricciardo was sixth.

George Russell's Mercedes, Sergio Perez's Red Bull, Alex Albon's Williams and the Haas of Nico Hulkenberg completed the top 10 on the timesheets.

- 'Nothing seems to work' -

Russell crashed into a wall at turn eight near the end of the session, but managed to limp back to the pits without his front wing which was embedded in the barrier.

His teammate Lewis Hamilton has won four times before in Singapore, but the seven-time world champion was a long way off the pace on Friday.

"At the moment, we won't be going into Q3," Hamilton said after coming 11th, 0.982 seconds behind Norris.

"We tried everything set-up wise and nothing seems to work."

Singapore was the only race Red Bull failed to win last year in a dominant season.

They returned 12 months later having lost their lead at the top of the constructors' standings to McLaren, who are 20 points ahead.

Verstappen has not won for seven grands prix as McLaren, Ferrari and Mercedes have all taken the chequered flag.

It looks odds-on that his fortunes will not improve around the unpredictable city centre track, where he has never won.

Meanwhile, McLaren said Friday they would modify their controversial rear wing after other teams, led by Red Bull, questioned its legality.

Governing body the FIA had said the wing, which was dubbed by some observers as a "mini-DRS (drag reduction system)" after footage showed it moving at high speed, was legal and no modifications were needed.

"While our Baku rear wing complies with the regulations and passes all FIA deflection tests, McLaren have proactively offered to make some minor adjustments to the wing following our conversations with the FIA," said a McLaren statement.

"We would also expect the FIA to have similar conversations with other teams in relation to the compliance of their rear wings."

G.Machado--PC