BUDAPEST, Hungary (AP) - Lewis Hamilton bolstered hopes of competing over the second half of the Formula One season by leading a McLaren 1-2 in practice for the Hungarian Grand Prix on Friday, when newcomer Jaime Alguersuari also debuted for Toro Rosso.

Hamilton, the defending Formula One champion, edged teammate Heikki Kovalainen on his final lap to set a fastest time of 1 minute, 22.079 seconds across two 90-minute sessions at the Hungaroring.

Nico Rosberg of Williams was third while Mark Webber - coming off his first career win in Germany and having just resigned with Red Bull for 2010 - finished ahead of Kazuki Nakajima of Williams.

Alguersuari had the track nearly to himself for the first half hour of his debut session. He ran 82 laps overall in his first drive in an F1 car since replacing the fired Sebastien Bourdais earlier this week.

The 19-year-old Spaniard, who will be the youngest driver to start a race on Sunday, was slowest of the 20 drivers with a lap of 1:23.942.