Reigning Solo Champion Guy Martin is out of next week's Southern 100 meeting at Billown.
The popular rider escaped with relatively minor injuries after a high-speed crash at Ballagarey during last month's Senior T.T. race.
Despite wanting to make his comeback as quickly as possible, he has decided to accept medical advice and withdraw from the event.
The 55th Southern 100 meeting starts with a practice session on Monday evening.