25 April

1917 Jean Lucas born 1961 Giancarlo Baghetti won the non-championship Syracuse Grand Prix 1963 Jo Siffert won the non-championship Syracuse Grand Prix 1968 Denny Hulme won the non-championship BRDC International Trophy 1982 Didier Pironi won the San Marino Grand Prix 1982 Felipe Massa born 1993 Alain Prost won the San Marino Grand Prix 2001 Michele Alboreto killed 2004 Michael Schumacher won the San Marino Grand Prix 2005 John Love died