Monday saw a pair of Team USA swimmers not only win gold in their respective events, but also set Olympic record times in the process. 

took gold according to an Olympic report.

King knocked off Russia's Yulia Efimova, who has previously been banned for doping, in a dazzling battle in the 100m breaststroke.

publicly called Efimova outby posting an impressive 1:04.93, Olympic record time.