1983 Grand Prix motorcycle racing season championship. In a fitting end to a successful career, Roberts won his last-ever Grand Prix race, however Spencer was able to secure second place to claim the world championship. The two riders dominated the season with each claiming six victories and six pole positions in the 12 race series. The following Grands Prix were scheduled to take place in 1983: Points are awarded to the top ten finishers. A rider has to finish the race to earn points. 1983 Grand Prix motorcycle racing season The 1983 Grand Prix motorcycle racing season was the 35th F.I.M. Road racing World Championship season.
2015 Speedway Grand Prix awarded after 20 heats. The first Grand Prix was awarded after 12 heats because the riders deemed the track to be unsafe to race. The win went to Matej Žagar, with second place going to Chris Harris and third to Jarosław Hampel. The fifth Grand Prix was awarded after 20 heats due to a waterlogged track. The win went to Maciej Jankowski, with second place going to Nicki Pedersen and third to Troy Batchelor. In the twelfth Grand Prix, Australian Jason Doyle was injured in the final and was unable to partake in the rerun. 2015 Speedway Grand Prix The