Leon Haslam says he had persistent problems in both World Superbike Championship races in Malaysia to blame for failing to break into the top five at Sepang.

After Aprilia dominated at the venue last season, Haslam was confident of mounting a renewed challenge for the podium and bolstering his hopes of second in the standings, but tyre woes would limit his efforts on both occasions.

Finishing seventh and sixth, behind returning team-mate Biaggi and Torres - both of whom reached the podium -, Haslam admits he was 'disappointed' with the outcome.

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"I had problems in both races. I had a lot of trouble losing the front. If I tried to conserve the rear tyre it would stress the front and I would lose speed going into turns. In the first race the tyres wore out very quickly and I wasn't able to maintain a fast enough pace.

"In the second I started well, but at the end I was lapping slower than the first race. Toward the end of the race I made a last ditch effort to overtake the riders ahead of me but I just didn't have the grip. I'm very disappointed because on this track the goal was to get onto the podium but we didn't manage to do that."