For the fifth year running, Atlas F1 is going to keep an eye on the battle between teammates throughout the season with a simple measurement: we compare the qualifying times of each driver against his teammate's result. After every Grand Prix, we will show how teammates have fared up against each other, and where they are overall since the beginning of the season. At the end of the season, the World Champion of Qualifying Differentials will be elected - the driver who beat his teammate by the most seconds. Only those who participate in at least 15 of the 17 rounds are eligible for the coveted crown; and for those who made the efforts and participated in all 17 races, the best and worst result will be scrapped.

With thirteen qualifying sessions completed for 2002, the differentials are once again on a roll! Let's see which drivers deserve bragging rights.

Hungary Notables

• Anthony Davidson: The rookie Briton, in his first ever Formula One appearence, qualified closer to teammate Mark Webber than his predecessor, Alex Yoong, had ever managed to. It will be interesting to see how he does on his second attempt.

• Setting the Record Straight: Felipe Massa equalled his best ever qualifying position (7th).

• The excuses: Takuma Sato had to use the spare car, after an oil leak was discovered on his race car.

• Changes since Germany: Ralf Schumacher is now faster than Juan Pablo Montoya