F1 2009 world champion Jenson Button believes there is still everything to play for in terms of the championship following this weekend's Singapore Grand Prix.

Button had to settle for fourth in the end in his McLaren and while he was a bit disappointed to have been jumped by championship leader, Mark Webber, who took the final spot on the podium, the Englishman maintained it wasn't too bad a result.

Indeed with his team-mate Lewis Hamilton failing to finish for the second race in a row, Button now closes to within five points of him - and he is still only 25 points off top spot.

"At the start, I thought I'd take it easy on the rear tyres, because we saw earlier in the weekend how quickly they were going away, and I think doing that helped me towards the end of my first stint when I was pulling in Lewis," Button reflected.

"On the Prime tyre, I had a similar issue with rear-end stability, so not being able to challenge a Red Bull car that had 30 extra laps on its tyres showed us that they were very quick around here today.

"But it's a circuit where we knew they'd be competitive, and probably one that was going to be difficult for us, so I go to Japan pretty happy.

"We've got a good upgrade for Suzuka: we'll have something that we tried to put on the car this weekend but couldn't - for reliability reasons. Coupled with our planned-for-Suzuka upgrade, it should hopefully be a bit of a double-whammy.

"My championship hopes were dented a little bit by Mark finishing ahead of me, but the points gap to the front is just a race victory away. It shows there's still everything to play for - one bad race can cost you a lot of points," Button concluded.