McLaren Mercedes driver Jenson Button of Britain reacts, after winning the Belgian Formula One Grand. (AP)

McLaren Mercedes driver Jenson Button of Britain, and his girlfriend Jessica Michibata, celebrate, after he won the Belgian Formula One Grand Prix in Spa-Francorchamps. (AP)

Jenson Button celebrated his 50th Formula One race for McLaren by ending a three-year wait and taking pole position in qualifying at the Belgian Grand Prix. (AP)

McLaren Mercedes driver Jenson Button of Britain steers his car during the third free practice session ahead the Belgium Formula One Grand Prix. (AP)

McLaren Mercedes driver Jenson Button of Britain leaves the pits during the qualifying session ahead the Belgium Formula One Grand Prix. (AP)

Sauber driver Kamui Kobayashi of Japan steers his car during the qualifying session. (AP)

Williams' Formula One driver Pastor Maldonado of Venezuela drives his car during the qualifying session of the Belgian F1 Grand Prix. (Reuters)