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.
Football: Corinthians book place in Hospital Cup final
Rugby: A win and a defeat for national sides on the road
TT 2026: Jamie Williams announces withdrawal from this year's event
Football: IoM women fight back to beat FC United of Manchester