Marco Melandri has been ruled out of the remainder of the Assen weekend after injuring his shoulder in a morning practice fall.
The San Carlo Honda Gresini rider ran straight on at the new, ultra-fast, Ruskenhoek turn after 12 minutes and suffered a big highside when he rejoined the track. The Italian walked away holding his left arm.
Melandri has now been officially diagnosed with a dislocation of the left shoulder and is therefore 'unfit to race'.
Melandri becomes the third member of the full time 2010 grid to be sidelined - after Valentino Rossi and Hiroshi Aoyama - and the fourth rider to miss a race this year, with Alvaro Bautista skipping Le Mans due to a collarbone injury.