The European Grand Prix has the potential to be a turning point in the 2011 season. It will see the first steps in the FIA's campaign to clampdown on off-throttle blown diffusers (see below), which Ferrari team boss Stefano Domenicali believes will even out performance and herald the start a "second championship". More significant, however, is that both McLaren and Ferrari have closed the gap to Red Bull over the past three races, and there are good reasons to believe that both will be in the fight for victory this weekend. Sebastian Vettel is still the clear favourite but is likely to feel more pressure from his rivals, which, as we saw in Canada, can lead to small mistakes.
On form
Jenson Button's victory at the Canadian Grand Prix was undoubtedly one of the best of his career and most likely the best we'll see from any driver this season. But it wasn't completely out of the blue. At the last three races he has been driving to the best of his ability, with a great comeback to third after a bad start in Spain, a brilliant drive in Monaco that very nearly resulted in victory and of course his performance in the wet at Montreal. Most tellingly, he's been close to team-mate Lewis Hamilton in qualifying, the main area he admitted he needed to improve on at the end of last season. But closing the gap to Sebastian Vettel is another matter entirely and will require him to consistently deliver performances of Canada calibre for the rest of the season.
Out of form
Virgin's 2011 season has not gone to plan. The team has lost ground to Lotus since last year and now appears to be losing in a tight battle with Hispania over the last few places on the grid. The team has reacted to its poor results by parting ways with technical director Nick Wirth, but that has left the car with little to no planned upgrades for the rest of the year. 2012 is now the target, but with the 107% qualifying rule looming at every event Virgin cannot afford to lose much more ground over the rest of the season.
One to watch

Talking Points
Button's futureAfter a News of the World story linked Jenson Button to Ferrari, there has been speculation that he might leave McLaren. However, Button has made no indication that he wants to go anywhere else and McLaren is keen to keep him onboard for the next few seasons. After his win in Canada he has become one of F1's hottest properties and has almost been given as many column inches as his team-mate Lewis Hamilton who has been linked to Red Bull. Expect the McLaren PR machine to swing into action and play down such reports over the weekend, with a fresh contract ready for Button in the next few weeks.
2014 engines
After an awful lot of posturing, the teams and the FIA have agreed to delay the reintroduction of turbo engines by one year and settled for V6s over straight fours. The F1 commission met on Wednesday to reach the decision after concerns about the cost, sound and overall image of F1 were flung at the FIA - that in fairness had the full agreement of the teams for the four-pot plan back in December. The changes still have to be rubber stamped by the World Motor Sport Council but the switch will be seen as a victory for Ferrari which has been anti-four cylinder engines right from the very start. It will also be interesting to see if the green credentials can lure the likes of Porsche and Honda back to F1.
Overtaking

Exhaust blown diffusers
Using exhaust gases to improve the performance of a car's diffuser has become an increasingly tight and technical battleground in F1 over the past year. All the teams are at it - from Red Bull to HRT - but naturally some gain more of an advantage than others. Key to the success of the system is getting it to work when the driver is off-throttle in order to keep a steady level of downforce over the whole lap. But the FIA is keen to clampdown on this practice and the first of its measures will be introduced this weekend. The teams use elaborate engine maps to achieve the constant flow of gases when the driver is off-throttle and some use particularly aggressive settings in qualifying for maximum effect. This weekend the FIA is banning teams from changing their engine maps between qualifying and the race, which some believe could peg Red Bull back a few tenths. At the British Grand Prix off-throttle blowing will be limited to just 10%, which may well turn the season on its head.

Weekend Timings
- June 24 Free practice 1 0800 GMT / 1000 Local
Free practice 2 1200 GMT / 1400 Local
June 25 Free practice 3 0900 GMT / 1100 Local
Qualifying 12000 GMT / 1400 Local
June 26 Race 1200 GMT / 1400 Local

Fast facts
- The average speed is the highest of any street circuit on the calendar at over 200km/h
- The track has more corners than any other on the calendar with 25 in total, 14 right-handers and 11 left-handers
- The official lap record is 1:38.683 set by Timo Glock in a Toyota in 2009
- The cars are at full throttle for 69% of the lap
Trivia
- The European Grand Prix has been staged at five different circuits - Nurburgring, Brands Hatch, Jerez, Donington and Valencia
- The Valencia circuit is built around the America's Cup port and marina area. It features a swing bridge section, which opens every evening to leave the track incomplete each night
- Valencia is famous for being the birthplace of the popular Spanish dish paella
- Near to the circuit is the futuristic Ciutat de les Arts i les Ciències, which cost an estimated €150 million to build
Circuit
On paper the Valencia street circuit looks like a cracker. It has long, wide straights punctuated by heavy braking zones and a flowing, high-speed final sector between concrete walls. But in reality, the straights aren't long enough, the braking zones aren't heavy enough and the final sector only serves to spread the field apart. If overtaking does occur, it's likely to be thanks to the DRS and it will take place into the chicane at turn 12 or the hairpin at turn 17.
FIA driver steward
Three-time grand prix winner Heinz-Harald Frentzen is this weekend's driver steward, after he performed the same role at the European Grand Prix last year.

Weather
Bright Spanish sunshine is expected over all three days of the grand prix weekend, with air temperatures hovering around 30C. In preparation for the hotter conditions Pirelli has brought soft compound tyres instead of super-softs and is pairing them the mediums which will make their race debut this weekend. Despite the tyre supplier erring on the side of caution, degradation levels are still expected to be high and three-stop strategies are likely to be the norm on Sunday.
Betting
Sebastian Vettel is by far the favourite to win in Valencia at even odds, ahead of Lewis Hamilton at 10/3 and Fernando Alonso at 5/1. Canada's winner Jenson Button has slightly more tempting odds at 15/2 while Felipe Massa, who showed improved form in Montreal, is a longer shot at 33/1.
ESPN Prediction
If things had turned out slightly differently in Monaco and Canada Fernando Alonso could have two victories to his name this season. Of course ifs and buts are worth nothing in Formula One, but the Ferrari does have the potential to win races and in Canada showed a dramatic improvement in qualifying pace.Laurence Edmondson is the deputy editor on ESPNF1
© ESPN Sports Media Ltd.

