Fernando Alonso retired from the Canadian Grand Prix on lap 23 because of intense back pain caused by his reclined seating position in the Aston Martin AMR26. The issue worsened over the course of the race at Circuit Gilles Villeneuve.
Alonso, a two-time Formula 1 champion, described feeling increasingly uncomfortable during the race. He noted that the team had attempted adjustments to the seat the night before but found no improvement. With the car outside the points and no threat of rain, the decision was made to end the discomfort early.