The Rio Olympics officially open this evening, although the sporting events begin Saturday. You can see a full schedule of the games here. Who should you watch for? Deadspin has a list of all 306 medal events (in order of popularity) and their predictions as to who will win. The next two weeks will tell if they got all of them -or any of them- right. After winning a world-record 22 medals in two previous Olympics, 18 of them gold, 31-year-old Michael Phelps is scheduled to compete in four events. The fastest man alive, Jamaican sprinter Usain Bolt, will defend his record in the 100 meter, 200 meter, and 4x100 relay while nursing an injured hamstring. And 19-year-old American gymnast Simone Biles could win as many as seven medals. The next two weeks will reveal all. -via the Preserfer