At the 2016 Olympic Games, USA Swimming won 33 medals – the most of any sport at the Olympics and over 25% of all US medals. 15 of those 33 medals were less than 0.5 seconds away from 4th place. 4 medals were less than 0.1 seconds away. Elite swimmers practice and execute with precision to find those tenths and hundredths of a second. Russell Mark will speak to the data and process that Olympic champions and World Record holders are using to make improvements with Tokyo 2020 less than 5 months away.