The current leader of the British Supersport series, Lee Johnston, was injured when he crashed his Ashcourt Yamaha at Church corner during qualifying. The English-based Ulsterman was airlifted to hospital with a broken shoulder and femur.
New Honda signing, Nathan Harrison broke his wrist and collarbone when he crashed out of the Superstock race later the same day at Dhu Varren.
Michael Sweeney crashed at the same spot in the opening Supertwin race on Saturday, breaking vertebrae, his collarbone, dislocating a knee and bruising his lung.
Conor Cummins was ruled out of Saturday’s North West action on his Milenco Padgett’s Honda after damaging his knee when he clouted a kerb at Ballysally roundabout in Thursday’s Superstock race and both North West newcomer, Mike Browne and James Hillier escaped serious injury in crashes at Juniper Hill chicane.