Duff's best season was in 1965, winning the 250cc Finnish Grand Prix and finishing the year in second place to Phil Read.
[1][2] Duff suffered a near-fatal crash in Japan and required extensive surgery and physical therapy.
In 1984, she changed her name to Michelle and commenced transition, separating from her wife.
[5] Following sex reassignment surgery, she wrote about her experiences as a professional motorcycle racer (note that this book is not about her life as a trans woman) in Make Haste, Slowly: The Mike Duff story.
An empty black cell indicates that the class did not compete at that particular championship round.)