Ruben Xaus has dropped to 16th in the 2011 World Superbike Championship standings after ending his perfect finishing record with two falls at Miller Motorsports Park.

The Spaniard, who is yet to go higher than eighth on the Castrol Honda this season despite finishing each race up to Miller, hinted at a breakthrough when he was fastest in pre-race warm-up, but scuppered his hopes of a good result in race one when a misjudged pass saw him collide with Michael Fabrizio.

Xaus fared little better in race two, running with the mid-field pack, only to come down at the Attitude chicane on lap three. Though he remounted to finish 18th, Xaus would leave the United States with no points.

Down to 16th in the overall standings, Xaus was disappointed with the outcome, though remained fairly philosophical about the situation.

"I had a good start in both races and the bike felt much better than qualifying. I felt confident enough to make some passes on the brakes but we used the clutch from yesterday which was more free and OK in the rain. It got rid of a bit of chatter, but without so much engine braking in the dry there was nothing I could do to avoid coming into contact with Michel Fabrizio in race one.

"The team made some good changes and I was feeling good, but then in race two I just touched the rumble strip with the engine in the second part of the chicane and that was it.

"From 12.00 onwards, we've had some bad luck but at least I was able to get the bike going again in race two and the lap times weren't so bad. Almost two DNFs is not good but sometimes racing goes that way and we have to look forward and be positive. We have made some progress here so I look forward to taking that to Misano in a couple of weeks."