Conversation so far:
What did Sean Kelly do in his early years of cycling?
Sean Kelly's first professional race was the Étoile de Bessèges. It started on 7 February 1977 and lasted six days.
How did Sean Kelly perform on the first day of Etoile de Besseges in February 1977?
Sean Kelly came 10th on the first day.

Question: What day was his best for Etoile de Besseges?
Self-contained rewrite: What day was Sean Kelly's best for Etoile de Besseges?