Summer Olympic Games federal government; the country's economic crisis; health and safety concerns surrounding the Zika virus and significant pollution in the Guanabara Bay; and a state-sponsored doping scandal involving Russia, which affected the participation of its athletes in the Games. Tokyo, Japan will host the 2020 Summer Olympics, making it the first Asian city to host the Olympic Games twice. Forty-two sports, spanning 55 disciplines, have been part of the Olympic program at one point or another. Twenty-eight sports have comprised the schedule for three of the recent games, 2000, 2004, and 2008 Summer Olympics. Due to the removal of baseball and
Ancient Olympic Games Greek city-state and kingdom were allowed to participate, although the Hellanodikai, the officials in charge, allowed king Alexander I of Macedon to participate in the games only after he had proven his Greek ancestry. The games were always held at Olympia rather than moving between different locations as is the practice with the modern Olympic Games. Victors at the Olympics were honored, and their feats chronicled for future generations. To the Greeks, it was important to root the Olympic Games in mythology. During the time of the ancient games their origins were attributed to the gods, and competing legends persisted