Weekend review and results round-up

Webber kept himself in front in the standings with third, just ahead of Jenson Button, but Lewis Hamilton's hopes were dented when he had to retire with a damaged car for the second race in a row, this time after contact with Webber.

How many races the five drivers have left to settle their contest remains unclear, with Bernie Ecclestone admitting this weekend that the Korean Grand Prix was at risk of being cancelled. A few days earlier, Ecclestone had also unsettled the drivers by floating his idea of a medals system again - a suggestion that did not go down well.

The other big news of the Singapore weekend came from Lotus, which has secured the historic Team Lotus title for 2011, but tension with Group Lotus and its own motorsport ambitions seems to be brewing.

Away from F1, the Dover NASCAR weekend was dominated by acrimony and accusation flying between the Richard Childress and Joe Gibbs teams, while Jimmie Johnson rose above it all to deliver a characteristically no-nonsense victory.

Romain Grosjean will lead Auto GP into its Monza finale after a hard-fought win at Spain's new Navarra track, and Juho Hanninen has one hand on the Intercontinental Rally Challenge title thanks to a close second place behind local expert Paolo Andreucci in Sanremo.

British Formula 3 wrapped up at Brands Hatch, where champion Jean-Eric Vergne was out of sorts and left the winning to Oli Webb, Daniel McKenzie and James Calado - the latter's triumph coming in an epic mixed-weather race.

The F1 sessions

Webber tops damp opening practice

Vettel keeps RBR on top in Singapore

Vettel on top again in final practice

Alonso pips Vettel to Singapore GP pole

Alonso holds off Vettel for vital win

The F1 headlines

Heidfeld says his future is open

Drivers admit rain chance is a concern

De la Rosa to test for Pirelli

Ecclestone pushing for medals system

Force India set to promote di Resta

Ecclestone: Delhi situation no concern

Red Bull: Ferrari the main threat now

Schumacher insists he will not leave

F1 wary of Ecclestone's medals idea

Fernandes: Name change secures future

Klien to stand in for Yamamoto

Webber: New tests making no difference

Hamilton slams 'ridiculous' chicane

Alonso: Critics too harsh on drivers

Ecclestone admits doubts about Korea

Hamilton not focusing on title anymore

Webber 'very lucky' to finish race

Whitmarsh: Hamilton did nothing wrong

Kovalainen: Track was safest option

The motorsport action

NASCAR: Johnson claims perfect score at Dover

British F3: Webb wins race one at Brands

British F3: McKenzie wins reverse-grid race

British F3: Calado wins thrilling season finale

Auto GP: Leal claims first Auto GP win in Spain

Auto GP: Grosjean wins in Auto GP at Navarra

IRC: Andreucci clinches Sanremo victory