Jorge Lorenzo, the only rider within one race win of team-mate and title leader Valentino Rossi, was 'really happy' with fifth in the wet/dry Friday free practice session for the 2009 British Grand Prix at Donington Park.

Lorenzo, who topped the leaderboard during the fully wet first half of the session, concluded the hour 0.5sec behind fastest man Dani Pedrosa (Repsol Honda).

"I'm really happy about this practice today because I felt comfortable on the bike and was able to brake quite late in the wet," said the Spaniard. "I was pleased that we had a chance in the drier conditions later, because it showed what we need to work on for tomorrow.

"I had made a lot of laps in the rain so my tyre was quite worn by that time, when it was more dry, but anyway the times weren't important for me today and I'm just happy about my performance in the wet. We learnt a lot and now we will use this to improve tomorrow," added the #99.

Fiat Yamaha team manager Daniele Romagnoli revealed that the team will work on improving acceleration with worn wets in case similar wet/dry conditions return for the race.

"We made a good start today and we were able to be very fast on the wet in the first half. At the end, with the track changing rapidly to dry, we encountered a few problems on acceleration, due to too much wear on the tyres after so many laps early on," he said. "It's important that we work on this as on Sunday there's a chance that the conditions could be similar today. Hopefully tomorrow we can concentrate on our dry setting. "

Rossi, who starts round ten 14 points ahead of Lorenzo, was third fastest.