F1: Standings after Japanese Grand Prix

Mark Webber enjoys another champagne moment with second place in the Japanese Grand Prix.

STORY HIGHLIGHTS

Mark Webber extends lead at top of the Formula One world championship race
The Australian leads Fernando Alonso and Sebastian Vettel by 14 points
Lewis Hamilton slips back to fourth after fifth place at Suzuka circuit
Red Bull stretch lead again in constructors' standings over McLaren

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(CNN) -- Mark Webber's second place behind Red Bull teammate Sebastian Vettel in the Japanese Grand Prix sees the Australian stretch his lead in the world title race to 14 points.

Fernando Alonso of Ferrari is also still in the championship race after finishing third at Suzuka, but Germany's Vettel has drawn level on points with him after his superb victory.

Alonso keeps second place by virtue of races won, but with three rounds to go the challenge from Red Bull looks ominous.

Lewis Hamilton could only finish fifth for McLaren after gearbox problems and has slipped to fourth in the standings, just ahead of reigning world champion and teammate Jenson Button, who claimed fourth.

The title race is between the leading five, but Button is now 31 points adrift and his hopes of a successful defense look to be receding.

Red Bull have also strengthened their advantage of McLaren in the constructors' championship with Ferrari in third.

The 17th round is being held in Seoul, South Korea, the first F1 race at the new track.

Drivers' Championship (after 16 rounds):

1. Mark Webber (Aus) Red Bull 220 points

2. Fernando Alonso (Spa) Ferrari 206

3. Sebastian Vettel (Ger) Red Bull 206

4. Lewis Hamilton (GB) McLaren 192

5. Jenson Button (GB) McLaren 189

6. Felipe Massa (Bra) Ferrari 128

7. Nico Rosberg (Ger) Mercedes 122

8. Robert Kubica (Pol) Renault 114