Canada’s Marco Arop and Kenya’s Emmanuel Wanyonyi cross the finish line in the men’s 800m final of the athletics event at the Paris 2024 Olympic Games at Stade de France in Saint-Denis, north of Paris, on August 10, 2024. [AFP] The world’s super-fast middle-distance athletes are kicking off the outdoor season with a gigantic battle in Kingston, Jamaica. Kenya’s Emmanuel Wanyonyi, an Olympic 800m gold medallist will once again take on his Canadian rival and world champion Marco Arop as the inaugural Grand Slam Track contest enters day two. But the two strong contenders are not racing in their 800m…