Sunday's showcase Monaco Grand Prix could be the most open in years, even if Formula One championship leader Jenson Button will still be very much the man to beat.

The Briton, a Monaco resident, has won four of the season's five races and will feel completely at home on the Mediterranean principality's tight and twisting streets.

However, the harbourside circuit with its unforgiving barriers and blind corners has made a mockery of predictions in the past, particularly if it rains.

With overtaking next to impossible, qualifying will be crucial.

Button's Brawn GP team-mate Rubens Barrichello, who celebrates his 37th birthday tomorrow before his 17th appearance in the glamour showcase of the season, is hungry for his first win since 2004.

In the slowest race on the calendar, McLaren's world champion Lewis Hamilton and the Ferrari pairing of Felipe Massa and Kimi Raikkonen could also be dangerous while Renault's Fernando Alonso and Toyota's Jarno Trulli are past Monaco winners.

Red Bull's Australian Mark Webber has always stood out while German team-mate Sebastian Vettel can add to the growing comparisons with retired compatriot Michael Schumacher.

"It is very different and it is 'chuck all the downforce on' and don't worry about the drag and see what happens," said Button of the challenge ahead at a circuit where he crashed heavily in practice in 2003 and had to miss the race.

"Monaco is a circuit where I need to get the best out of the car and maybe change my style a bit from the first four races.

"When Red Bull have a clear shot at it and they do everything right, they are going to be competitive and we can't forget that... they are going to be on us in Monaco for sure."

Hamilton, winner last year and second in his astonishing rookie season, has been in love with Monaco since the days when Brazilian Ayrton Senna dominated with Lotus and McLaren.

"It's always a shock to my system when you get on that track and realise the speed you are doing with all these barriers around you," the 24-year-old Briton told Reuters.

"It's very, very special to drive that circuit and I really hope that the car works better there, especially with the slower speed corners.

"We'll be able to be a little closer," added the champion, whose title defence could be over by the summer break after he scored just nine points in the first five races compared to Button's 41.

While 2007 champion Raikkonen won for McLaren in 2005, Brazilian Massa has been on the podium on his last two visits there and desperately needs a third to fire up Ferrari's worst ever start to a season.

"It would be great to go for a hat-trick this time," he said on the Ferrari website (www.ferrariworld.com).

"It will be very tough, but we'll give it our best shot.

"Thanks to the aerodynamic updates we introduced in Spain, the F60 is much improved," added the Brazilian who scored his first points of the year at the last race in Barcelona.

"In terms of performance, we have made significant steps forward, while there is still much to do on the reliability front."

Factbox: Monaco GP

Venue: Monte Carlo.

Race distance: 78 laps (total distance 260.520 km/161.887 miles). Each lap is 3.340 km/2.075 miles.

Start time: 14:00.

Race lap record: Michael Schumacher (Germany) one minute 14.439 seconds (average speed 161.528 kph/100.369 mph). Ferrari, 2004.

2008 pole position: Felipe Massa (Brazil) Ferrari 1:15.787.

2008 race: McLaren driver Lewis Hamilton won to take the championship lead despite starting third and having to make an unscheduled pitstop after hitting the barriers on lap six. The race ended two laps early after the two hour mark was reached.

Other stats: Ferrari have not won in Monaco since Michael Schumacher in 2001. However Ferrari have set the fastest lap in four of the last five races there.

Only three times in the last 10 years has Monaco been won by the team taking the constructors' title at the end of the season.

The driver starting on pole position has won only four times in the last 10 years.

McLaren have won five of the last nine Monaco Grands Prix, including the last two. Over the last 25 years, McLaren have won 15 times to Ferrari's three.

Sign up to our free newsletters

Get the best updates straight to your inbox:
Please select at least one mailing list.

You can unsubscribe at any time by clicking the link in the footer of our emails. We use Mailchimp as our marketing platform. By subscribing, you acknowledge that your information will be transferred to Mailchimp for processing.