Australia sealed their place in the Speedway World Cup final by winning last night's race-off in Prague.

The Aussies, who scored 36 points, beat USA by five to grab the last remaining slot in Saturday's showcase.

Great Britain suffered the humiliation of coming last behind minnows Latvia.

Holders Denmark - who won Monday's Event Two at King's Lynn Norfolk Arena - Poland and hosts Czech Republic are the other countries who will do battle at the weekend for the prestigious Ove Fundin Trophy.

Australia (number of rides in brackets) 36 points: Darcy Ward 13 (5), Jason Doyle 8 (5), Cameron Woodward 8 (5), Troy Batchelor 7 (5).

USA 31: Greg Hancock 20 (6), Ryan Fisher 8 (5), Ricky Wells 3 (4), Gino Manzares 0 (4)

Latvia 29: Kasts Puodzuks 10 (5), Maksims Bogdanovs 9 (5), Vja?eslavs Giruckis 5 (5), Andzejs Lebedevs 5 (5)

Great Britain 28: Tai Woffinden 14 (6), Chris Harris 7 (5), Lewis Bridger 4 (3), Ben Barker 3 (5)