Singapore briefing: one stop, soft or medium first, and a Safety Car that decides it
Verstappen on pole by 0.054 s with Ferrari on the front rows, a cool night after afternoon showers, tyres that this year degrade the same whatever the colour, a 250 kW cap through three slow sections, and a track where nobody passes without a second a lap. Our pit wall sets out the plan, the numbers behind it and what would make us wrong.
The whiteboard says one stop. Soft to medium with the stop around lap 28, or medium to soft around lap 34: our planner puts them 0.7 s apart over 62 laps, which is noise. The hard is 10–12 s slower however you place it, two stops cost about ten seconds, and overtaking here needs a second a lap of pace, so the car that stops first does not undercut anyone – it only loses track position to a Safety Car it has not had. That is the real decision: the medium-first car keeps its stop in hand for the Safety Car that Singapore produced in every race from 2008 to 2023 and in neither of the last two; the soft-first car gains at the start and the restarts and is exposed if the Safety Car comes after it has stopped.
Our rule for Sunday, borrowed from Ruth Buscombe's "tyre light": the soft becomes the race tyre from lap 32 if it degrades like the hard, as it has all season; from lap 41–44 if it behaves like last year's compound here; from about lap 25 under a Safety Car. Nobody has a race-trim soft stint from this weekend – the Sprint ran on intermediates – so the first ten laps of the soft starters are the data everyone is waiting for.
Pirelli brought C3, C4 and C5 and requires at least one of C3/C4 in the race. The 2026 finding that matters: on the same car in the same race the three compounds degrade within 0.02 s per lap of each other – the track and the heat set the rate, not the colour (Buscombe, eight C3/C4/C5 races). Our library says the same for this circuit: the 2025 night race measured near-zero wear on soft and medium and 0.05 on the hard, with stints of 37–47 laps on medium and hard. At the 30–32 °C track we expect after the afternoon showers, we plan with 0.02 s per lap for soft and medium and a pace offset of 0.3–0.4 s per lap in the soft's favour; on cool tracks this year the C5 has been up to 0.4 s quicker, in Austrian heat it was slower than the hard from lap one.
What is left in the garages, by our count from the timing data after qualifying: the top six each used a soft in every Q segment. Verstappen, Antonelli, Lawson and Gasly saved soft in FP1 and have the most left – Red Bull one spare new soft beyond the race set, but, if our reading of FP1 is right, no new hard, which costs nothing on a night when the hard is the worst tyre. Leclerc, Hamilton, Norris and Piastri hold two new mediums and the one new hard each. Russell did not need to save anything and has four new softs for a race from the back.
Daylight was the soft's worst case. FP1's hard long runs degraded at 0.18 s per lap on a 50 °C track against 0.05 at night in 2024 and 2025 – three and a half times. At 30 °C that problem is gone; what remains is the Singapore pattern of rears overheating through sector 3, which decided Q3 for Hamilton and Leclerc.
Race recharge is 8.5 MJ per lap, 9.0 for a car inside the 1.0 s detection window at 4350 m with the extra power released at 4430 m. The new piece is the alternative curve: in the race, between 400 and 900 m (Turns 1–5), 1750–2150 m (7–9) and 2600–3000 m (10–13), deployment is capped at 250 kW, the full 350 kW only on the main overtaking zones. Those three sections are where the 2026 car is slowest, and the cap rewards an engine that pulls from low revs: Red Bull Ford has been the benchmark on that all year. It is also where Sepang's low-rpm bug lived; the FIA reinstated the Sepang configuration for this weekend and the Sprint produced no reports, but a wet formation lap or a slow Safety Car train is exactly the case the Austin update is meant for. We listen for power complaints in Turns 1–5 first.
Speed traps in qualifying: Russell 305, Verstappen 304, Lawson 304, Antonelli, Norris, Piastri and Gasly 303, Leclerc and Hamilton 301. Mercedes still fastest in a straight line, Ferrari four km/h down and quick in the corners instead. Russell starts with the fifth ICE, turbo and exhaust and the fourth MGU-K, energy store and control electronics: everything is new, and that is the one car on the grid with no power-unit worry for 62 laps.
Five updates in the FIA submissions: Mercedes a front wing and endplate, Red Bull a front wing and rear-wheel bodywork for cooling, McLaren a front brake duct. Mercedes ran old and new front wings back to back in FP1 – Russell old, Antonelli new – and the new one was 0.57 s slower in Sprint Qualifying, most of it in sectors 2 and 3. Antonelli qualified fourth, 0.19 s off pole, so either the package was reverted or the balance was found; the parc fermé list on Sunday morning tells us which. Red Bull changed Verstappen's steering column under parc fermé after the radio fault, and Hadjar's car took a used engine and turbo before the Sprint, stopped on lap 2, and failed to set a time in Q1: the second Red Bull is a parts car this weekend.
Hamilton's problem is balance, not pace: Ruth Buscombe's telemetry overlay from Sprint Qualifying had the Ferrari level with Verstappen to Turn 14 and losing 0.44 s in sector 3 with the rears gone; in Q3 the same story, snaps at Turns 1 and 3, fastest in Q2. A front-wing click and a clean lap is the difference between P3 and pole, and that is also the difference between a Ferrari that can hold a 30-lap soft stint and one that cannot.
Open-Meteo for Marina Bay, fetched Saturday evening: showers through Sunday afternoon with 96–100 % probability from 14:00, 1.1 mm around 18:00 and 0.2 mm at 19:00, then 53 % and no rain at the 20:00 start, clearing to 42 % cloud by 21:00 and 18 % by 22:00. Air 27 °C, humidity 86 %, wind under 3 km/h. Qualifying ran at 39.8 °C track; after an evening shower we expect 30–32.
Two consequences. A shower two hours before the start on a track with no sun dries slowly: the 2022 night race dried at 0.09 % of lap time per minute on intermediates, and Turns 7, 9, 10 and 18–19 are the last to dry. An intermediate start with a crossover around lap 10–15 is the hardest race there is here, and the hard-to-forecast timing of a convective shower is the whole uncertainty. If the track is dry at 20:00, the cool surface is good news for the soft and bad news for the hard. We refresh the forecast two hours before the start.
4,940 m, 62 laps, pit loss 25.9 s green, 5.6 under VSC, 8.6 under a Safety Car. Start 20:00 local, 14:00 in Sweden, two hours after sunset. Our overtaking threshold for this circuit is the highest on the calendar: 1.34 s per lap of pace advantage needed to pass in 2024, 2.53 in 2025, against a season median of 1.0; Buscombe's pass-rate curve says the same, 73–80 % of attempts succeed at a second a lap and 21 % below 0.3. Track position is the whole game, and the pit stop is the only place it changes hands.
Grid side matters here more than anywhere: pole has led lap 1 in all 14 dry Singapore Grands Prix, the odd (clean) side has gained about 1.3 places on lap 1 and P2 has lost a place in six of fourteen. Leclerc starts P2 on the dirty side with Hamilton P3 on the clean one. The alternative-curve sectors begin at 400 m, before Turn 1: the launch to the first corner runs on full power, the exit of Turn 1 to Turn 5 does not.
Verstappen has done everything with one lap this weekend: Sprint pole with a single run, Grand Prix pole on the first of two Q3 laps while the track went away from everyone. "It can't get worse, it can only get better," on the starts – two lost first corners in a row, both in the wet. Ferrari has pace in two cars and two different problems, Leclerc's under braking in Q1–Q2, Hamilton's rears in sector 3, and the stated plan is to run split strategies: expect one Ferrari on medium and one on soft, and the one on soft is the one that gets stuck behind Verstappen if the start goes to form.
Mercedes is the unknown: Antonelli P4 with the new wing and a championship to protect, Russell P22 with nothing to protect and four new softs. Antonelli leads Russell by 89 points with 175 left; fourth place on Sunday leaves 150 on the table. The title cannot be settled here, and the only way Russell stays in the conversation is points from the back. McLaren starts side by side on row three a day after their Sprint collision, with Norris already on the fifth ancillary component.
Qualifying gaps to pole: Leclerc 0.054, Hamilton 0.123, Antonelli 0.189, Norris 0.339, Russell 0.374, Piastri 0.487, Gasly 0.852, Lawson 0.996, Lindblad 1.408. Sprint pace on intermediates, best quarter of clean laps: Hamilton fastest, Verstappen +0.03 %, Leclerc +0.36, Norris and Antonelli +0.6, Lawson +0.66, Piastri +0.73. Hamilton was quickest in the wet, quickest in Q2 and second-best in Q3's first two sectors; the car is there if the rears last.
The driver we have circled is Russell. He has crashed out of the lead in the Sprint, carries a 40-place penalty, and has the fastest straight-line car and the most fresh soft rubber in the field. From P22 our target model gives a one-stop on the field's strategy about a two-in-three chance of points, a late stop one-in-five, two stops one-in-ten; the number that matters is not in the model – it is how many cars he passes before the Safety Car, and at 1.3–2.5 s per lap required that is a short list.
Grid after penalties: Verstappen, Leclerc, Hamilton, Antonelli, Norris, Piastri, Gasly, Lawson, Lindblad, Hülkenberg, Bearman, Ocon, Sainz, Bortoleto, Colapinto, Alonso, Albon, Stroll, Pérez, Bottas, Hadjar (outside 107 %, start subject to the stewards' permission), Russell (40 places, FIA document 20). Hülkenberg is summoned for impeding Sainz in Q1. Norris–Piastri and the Albon–Bortoleto–Bottas collision in the Sprint: no further action. The heat hazard declaration stands, cars must be fitted with race tyres four hours before the start, and the 1:52.0 maximum between the Safety Car lines applies on the reconnaissance laps.
Sixty-five FIA documents for this round are in our archive; the ones for Sunday are the power unit information (the 250 kW sectors and the overtake points), the Technical Delegate's reports on Russell's power unit, and the race director's notes. Tyre rule to remember if it rains: a race started behind the Safety Car requires wet-weather tyres until the Safety Car returns, and the same at a resumption.
A soft that falls off after 20 laps: then the medium-first cars inherit the race and the tyre light never goes to soft. A shower at 19:30: then nothing above applies, it is intermediates, a crossover around lap 10–15 and whoever still has two fresh sets of them. A Safety Car on lap 20: then the one who has not stopped wins the lottery, and the lottery here was drawn in fifteen of seventeen races. And a Verstappen start like the last two: then it is Leclerc or Hamilton leading into Turn 1 and Red Bull spends 62 laps proving that nobody passes at Marina Bay.
How to read this: the briefing is written before the race from practice and qualifying data, FIA documents and Pirelli's information. The sections mirror how a Formula 1 team splits the work; the numbers are ours and each carries its source. After the race the Aftermath says where we were right and where we were wrong.