Ducati Xerox's best finish of tenth position in the fourth round of the 2010 World Superbike Championship at Assen is the factory teams' worst weekend result in more than nine years.

Another disappointing weekend for the manufacturer-backed Ducati outfit, which has seen its form fluctuate since the opening round of the season at Phillip Island, Haga's tenth place in the first race would prove its highest finish of the weekend.

Indeed, with Michel Fabrizio only managing 13th and 12th, and Haga retiring in race two, it is it's the team's lowest 'best' finish at the end of a weekend since the Japanese event at Sugo back in 2001 when the combination of Troy Bayliss and Ruben Xaus on the Ducati Infostrada bike could only manage 13th.

With the teams' form being brought further into scrutiny by the fact it was out paced by four of its five satellite entries in the second race, Haga admits his lack of consistency is letting him down.

"It was a very difficult day for us today. In race one I didn't make the good start that I needed to, and from the fourth row I had to push very hard even to make up one or two positions. In Race 2, I realized already during the warm-up lap that the engine vibrations I was feeling were maybe stronger than normal.

"I hoped it wouldn't be a problem and started the race but it became worse as I rode and I knew there was something wrong technically. It's very disappointing of course because this year, more than ever, it's important to be consistent - there are so many of us fighting for the positions that count and it's becoming more and more of a battle."

Having now failed to finish inside the top ten in the last six races, Michel Fabrizio has now slipped to ninth in the standings.

"In race one I got off to a bad start and it was difficult to match the pace of those ahead of me. We made a few changes to my 1198 between the two races and for the first half of race 2 it was better; I was able to push hard and make up a few places.

"But then, in the second half of the race, practically from one lap to the next, the rear tyre performance dropped dramatically. I risked falling a couple of times and realized I had to take it easy if I wanted to finish the race. I'm looking forward to Monza where I hope we can perform a lot better in front of my home crowd."