 Sportscar racing was left without a single unified championship in which to complete, leading to a large number of smaller breakaway series across the world.The All Japan Sports Prototype Championship series in Japan was also unable to continue after 1992 as well, although Group C cars continued to participate as guests in other series.IMSA's championships in North America continued on but also suffering from dwindling fields until it was replaced by the American Le Mans Series in 1999.