The 1973 Individual Speedway World Championship was the 28th edition of the official World Championship to determine the world champion rider.[1][2][3][4][5][6]
The 1973 World Final was won by Polish rider Jerzy Szczakiel following a run-off in with defending champion Ivan Mauger after both riders had finished on 13 points. On the second lap of the run-off, Mauger fell in turn 3 after trying a risky passing move leaving Szczakiel to win easily. Another Polish rider, Zenon Plech finished third. Rank outsider Szczakiel, who had finished last with no points scored in his only other World Final appearance in Sweden in 1971, rode the meeting of his life and was only beaten in his final two rides before defeating Mauger in the run-off.[7]
The final, held at the Silesian Stadium in Chorzów, Poland, is believed to have been held in front of the largest crowd in world speedway history, estimated to be around 130,000, though some reports put the size of the crowd as anywhere from 90,000 to 120,000.[8] The previous record for a final was 95,000 during the 1938 Individual Speedway World Championship at Wembley.