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

Australia Notables

• The Jordan Pair. Not quite the start we expected for the talented Japanese Takuma Sato and his veteran teammate Giancarlo Fisichella. But, with rain and mechanical gremlins working against Sato, who are we to add insult to injury? So the Jordan pain are excluded from this week's Qualifying Differentials due to lack of actual laptimes in qualifying to compare between the two. We'll just have to wait and see how they measure in upcoming races.

• Setting the Record Straight. debutants aside, Kimi Raikkonen set his best ever qualifying result - placing his car in fifth position. Ironically, so did Alex Yoong: qualifying 21st was his best ever result so far...

• The Rookies. Among those making their first appearance in Melbourne, Felipe Massa was by far the most impressive - qualifying in ninth place, ahead of teammate Nick Heidfeld.