Peel resident Andrew Pitt could only finish seventh as the World Supersport Championship returned at the weekend following its summer break.
Championship leader Cal Crutchlow won at the Nurburgring in Germany to extend his advantage over Eugene Laverty to 22 points.
Laverty came second with Spain's Joan Lascorz taking third spot.
Defending champion Pitt has struggled to regain the form which saw him top the standings last year and he lost more ground as he looks to defend his title.
He lies seventh in the standings, 116 points behind Crutchlow.
Hockey: New mixed season enters second week
TT 2027 race schedule announced
Rugby: Douglas to host newly-promoted Wilmslow in season opener
Football: Early premier league bottom two to meet this weekend