In 2017 over 385,000 people participated in the CrossFit Open, which ended with Workout 17.5, a 10-round couplet of thrusters and double-unders. Fast-forward four months to Saturday night at the Games and the remaining 74 athletes took on 17.5 again — this time at a heavier weight. With a separate barbell for each round, the competition floor was littered with a record number of bars and bumper plates. Australia's Kara Saunders and Tia-Clair Toomey battled rep-for-rep in the event and for the remainder of the weekend in one of the closest competitions in Games history.