* Lap 1: Starting from pole for the third time this season – and a record-extending 67th time in all – Michael Schumacher is beaten away by team-mate Felipe Massa and the German also has to work hard to repel fast-starting world championship leader Fernando Alonso. Giancarlo Fisichella and Rubens Barrichello grab fourth and fifth, but there’s chaos in the middle of the pack. Juan Pablo Montoya tips team-mate Kimi Räikkönen into a spin that starts a chain-reaction accident. Räikkönen slides into Jenson Button, who spins and clips Nick Heidfeld. The German is launched into a spectacular series of five barrel rolls. Mark Webber, Scott Speed, Christian Klien and Franck Montagny become entangled in the aftermath. All the drivers are swiftly out of their cars. Christijan Albers also sustains damage, which he has repaired in the pits at the end of the lap. Button is the only driver involved who does not retire on the spot. The safety car is deployed. Behind the top five, Jacques Villeneuve runs ahead of Ralf Schumacher, Nico Rosberg (sent to the back of the grid for failing to heed a mandatory weight check call during qualifying), Tiago Monteiro, David Coulthard, Takuma Sato, Vitantonio Liuzzi (who was given a theoretical 10 places on the grid after an unscheduled engine change), Jarno Trulli (who started from the pits after his car’s rear suspension was repaired while his car was held under parc fermé conditions) and Button.

* Lap 3: Button pits for repairs.

* Lap 4: Button retires to the pits.

* Lap 7: Restart. Massa pulls 0.3s clear of Michael Schumacher. Sato tries to pass Monteiro at the first turn and the two cars touch. Monteiro spins and rejoins at the back of the pack. Sato retires. Ralf Schumacher passes Villeneuve for sixth. Trulli moves ahead of Liuzzi.

* Lap 8: Monteiro pits for repairs. Trulli passes Coulthard for ninth.

* Lap 10: Massa leads by 0.7s. Alonso is 3.9s adrift of the Ferraris. Trulli moves up to eighth, ahead of Rosberg. Monteiro pits again – this time for good.

* Lap 12: Massa leads by 0.9s. Fisichella continues to harass Alonso, as he has since the race restarted.

* Lap 15: Fisichella passes Alonso on the approach to Turn One. Barrichello is about half a second behind the Spaniard.

* Lap 18: Massa leads by 1.6s. Fisichella is edging closer to Michael Schumacher – but not by much.

* Lap 21: Fisichella sets the race’s fastest lap so far – 1m13.155s. He trails Michael Schumacher by 7.9s. Alonso heads a chain stretching back to seventh-placed Villeneuve.

* Lap 24: Villeneuve pulls off amid a plume of smoke to retire from seventh place. Barrichello pits and drops from fifth to seventh.

* Lap 26: Massa laps in 1m12.961s – he leads by 1,0s. Third-placed Fisichella is 9.2s shy of Michael Schumacher. Coulthard and Liuzzi remain tied together – 0.3s apart – as they have been almost since the restart.

* Lap 28: Albers makes a scheduled stop.

* Lap 29: Massa laps in 1m12.954s. Michael Schumacher and Fisichella pit.

* Lap 30: Massa and Ralf Schumacher stop for fuel and tyres. The Brazilian rejoins behind his team-mate. Alonso leads.

* Lap 31: Alonso pits. Michael Schumacher leads.

* Lap 32: Albers pits again.

* Lap 33: Michael Schumacher leads by 2.2s from Massa, with the yet-to-stop Trulli third and the Renaults fourth and fifth, with Fisichella 7.1s clear of Alonso. Liuzzi remains trapped in 10th, 0.3s behind Coulthard.

* Lap 37: Just past half-distance, Michael Schumacher leads Massa, Trulli, Fisichella, Alonso, Ralf Schumacher, Barrichello, Rosberg, Coulthard, Liuzzi and the lapped Albers.

* Lap 38: Albers makes his fourth stop and, this time, remains in the pits despite the crew’s lengthy efforts to fix the problem.

* Lap 39: Trulli pits and slips from third to seventh.

* Lap 43: Michael Schumacher leads by 4.6s. Fisichella remains a distant third. There is little prospect of change elsewhere in the field. Rosberg makes his first stop.

* Lap 47: Coulthard makes his only scheduled stop after the race’s longest opening stint. He rejoins inches ahead of Rosberg and just holds the German off into the first series of turns. Liuzzi maintains a watching brief right behind.

* Lap 49: Barrichello makes his second stop.

* Lap 50: Michael Schumacher posts a 1m12.962s – a personal best. He leads by 7.1s.

* Lap 51: Michael Schumacher ups his pace again: 1m12.895s, the race’s best lap to date. He stretches his lead to 8.5s.

* Lap 52: Massa pits. He rejoins third, just in front of Alonso.

* Lap 53: Fisichella and Ralf Schumacher pit.

* Lap 54: Michael Schumacher makes his final fuel and tyre stop. He rejoins without losing his lead.

* Lap 55: Alonso pits and rejoins sixth, behind the Toyotas. He trails Ralf Schumacher by more than four seconds.

* Lap 56: Michael Schumacher laps in 1m12.719s and leads by 12.5s. Liuzzi passes Rosberg for ninth under braking for Turn One.

* Lap 63: Fifth-placed Ralf Schumacher retires to the pits.

* Lap 72: Alonso sets his quickest lap of the race: 1m13.316s.

* Lap 73: Michael Schumacher wins by 7.9s from Massa, Fisichella, Trulli, Alonso, Barrichello, Coulthard and Liuzzi, who scores Toro Rosso’s first world championship point.