On this day: Ayrton Senna's F1 debut marred by early retirement in Rio On March 25, 1984, Ayrton Senna made his Formula 1 debut in Brazil and despite an early retirement in Rio, the talent of "wunderkind" Senna was already clear Content Original Link: https://sports.yahoo.com/articles/day-ayrton-sennas-f1-debut-100002864.html