 Complete the following phrase:  However, his 2007 season began with problems. At the season opening , he suffered a gearbox problem during qualifying and required an engine change. Massa started the race from 22nd position due to these problems and a 10-grid-slot penalty for the engine change. He employed a one pitstop strategy for the race and finished in sixth place. Massas problems continued in Malaysia, where despite qualifying on pole position, the McLarens of Ferdo Alonso and Lewis Hamilton overtook him at turn one. Massa ran off the track while attempting to overtake Hamilton, and lost two more places, dropping down to fifth place, where he finished the race. However, his season subsequently improved, as he won the 