Fermín Aldeguer has been ruled out of the Thailand Grand Prix after medical officials determined he was not fit to compete at the Chang International Circuit in Buriram.

The Spanish rider, who is preparing for his debut MotoGP season, sustained injuries in a recent incident and failed to receive clearance following trackside medical examinations.

Team representatives confirmed that Aldeguer underwent further evaluation after reporting persistent discomfort, with doctors advising against participation to avoid aggravating the injury at the physically demanding Thai circuit.

The Buriram track, known for its high temperatures and heavy braking zones, places considerable strain on riders, making full fitness essential.

A replacement rider has been arranged for the opening round, while Aldeguer is expected to focus on recovery with the aim of returning for the next race on the calendar.

The team said rehabilitation protocols are already under way and that updates will be provided as his condition improves.

Aldeguer’s absence reshapes the competitive picture for the Thailand opener, where teams are eager to establish early momentum in the 2026 championship.

As one of the sport’s most promising young talents following his strong performances in Moto2, his withdrawal represents a setback at the start of what was anticipated to be a breakthrough campaign.

Officials emphasised that rider safety remains the priority, with strict medical clearance standards enforced throughout the paddock.

Attention now turns to the race weekend itself, where the opening contest will proceed without one of the grid’s emerging stars.