Rio Olympics 2016: From Michael Phelps to Simone Biles, the best photos of Day 6
Michael Phelps won his 22nd gold medal while Fiji won its 1st, catch all the best moments of the Rio Olympics.
Popovici claimed victory in one of Dressel's events, the men's 100m freestyle, and McIntosh won the women's 200m butterfly.
With a ruling aimed squarely at Lia Thomas, the first transgender woman to win an NCAA national championship, world governing body FINA effectively barred athletes such as Thomas from competing in women's swimming events.
Thomas Ceccon shaved a quarter of a second off the 100m backstroke world record as he won in 51.60sec.