Imola: Thousands of Formula One fans yesterday commemorated the 20th anniversary of Ayrton Senna's death at the scene of the sport's darkest day in Imola in Italy as tributes poured in for the late Brazilian master driver.

F1 drivers Fernando Alonso ( r) and Kimi Raikkonen pay tribute to Ayrton Senna on his 20th death anniversary yesterday. Pic/AFP.