OK, the 2001 Australian Grand Prix saw the debuts of several drivers, three of which had 52 Grand Prix between them. Other than 1991 in Belgium, has a single Grand Prix's debutants gone on to more success?
There have been 13 occasions in the world championship era when more than one race winning driver has made their debut in the same race. In descending order of combined wins, these are:
1. Australian GP 2001
52 wins (Alonso 27, Raikkonen 18, Montoya 7)
2. British GP 1950
30 wins (Fangio 24, Farina 5, Fagioli 1)
3. Australian GP 2002
18 wins (Massa 11, Webber 7)
4. Australian GP 2007
18 wins (Hamilton 17, Kovalainen 1)
5. Monaco GP 1950
17 wins (Ascari 13, Gonzalez 2, Trintignant 2)
6. British GP 1977
8 wins (G Villeneuve 6, Tambay 2)
7. Monaco GP 1960
7 wins (Surtees 6, Ginther 1)
8. Dutch GP 1970
7 wins (Regazzoni 5, Gethin 1, Cevert 1)
9. Australian GP 1997
7 wins (R Schumacher 6, Trulli 1)
10. Indianapolis 500 1950
6 wins (Parsons 1, Wallard 1, Ruttman 1, Flaherty 1, Hanks 1, Rathmann 1)
11. Brazilian GP 1994
4 wins (Frentzen 3, Panis 1)
12. Indianapolis 500 1951
3 wins (Vukovich 2, Ward 1)
13. Indianapolis 500 1952
2 wins (Sweikert 1, Bryan 1)