David Knight crashed out on the opening test of day two of the International Six Day Enduro in Portugal.
He managed to ride back to the pit area but was taken to hospital for precautionary x-rays to his back and neck.
Reports suggest he returned later to watch some of the racing.
After the opening day on Monday, Knight was the leading E2 rider and fourth in the overall individual standings.
Cycling: CC IoM makes winning start at 2026 Ras Tailteann
Guest rider Rowen Baker takes victory on first stage
Football: Ramsey Youth Centre & Old Boys promoted to premier league
Northern side heading up after Marown lose out at Castletown
TT 2026: Josh Brookes to ride for new team in Supersport class
UGGLY & CO Racing making debut at 2026 event
Clerk of the Course 'very mindful' around costs of TT
But Gary Thompson says budget to run meeting has never been cut