Narain Karthikeyan endured a tough race to finish 20th and last while Juan Pablo Montoya claimed his second win of the season on a day of mixed luck for McLaren-Mercedes at the Italian Grand Prix today.
Whereas Colombian Montoya drove start-to-finish for his sixth career victory, teammate Kimi Raikkonen saw his championship hopes evaporate after finishing fourth at the Autodromo Nazionale di Monza circuit.
Championship leader Fernando Alonso was second followed by local lad Giancarlo Fisichella for another satisfying day at office for the Renault team.
The success of McLaren and Renault was in contrast to the slide of Ferrari whose seven-time and defending world champion Michael Schumacher and Rubens Barrichello finished 10th and 12th outside the point position.
Alonso now has 103 points, a lead of 27 over Raikkonen with four races to go in the season.
Karthikeyan's Jordan teammate Tiago Monteiro of Portugal came 17th while the former saw the two Minardis finish ahead of him.
Raikkonen had the fastest time in the qualifying but was penalised 10 spots on the grid for engine change.
The Finn was stuck at the 11th place behind former world champion Jacques Villeneuve in Sauber until the first pit stop.
He then passed Alonso at the second chicane but his left-tyre was damaged at the same spot after the second pitstop.
Karthikeyan's prospects of a better finish were affected when he came in contact with Albers on lap 34 and went off track due toa puncture in his left rear tyre and had to pit twice for car examination.