For nearly the last half-century, Eino Leinonen has never missed a harness race at the Windsor Fair. But with nearly 5,000 races under his belt and more than a decade of rating the horses and drivers for people betting on the races, Leinonen, is ending his long-running hobby and passion. Maybe. Bill McFarland, the agricultural fair’s race director who encouraged Leinonen to start coming to the races, said Leinonen is the fair’s “No 1 fan.” Leinonen has attended the approximately 100 races at every Windsor Fair since 1967, McFarland said. “Some of those days might have been rained out,” McFarland said.