Japan's Kosuke Hagino earned the gold medal on Men's swimming 400 m individual medley

Gold : Kosuke Hagino (Japan) [4:06.05]

Silver : Chase Kalisz (USA) [4:06.75]

Bronze : Daiya Seto (Japan) [4:09.71]

Australia's Superman Mack Horton won gold for Swimming : Men's 400 m freestyle

Gold : Mack Horton (Australia) finished at 3:41.55

Silver : Sun Yang (China) finished at 3:41.68

Bronze : Gabriele Detti (Italy) finished at 3:43.49.

First Ever Olympic Gold for Vitnam by Hoàng Xuân Vinh on men's 10 m air pistol

Gold : Hoàng Xuân Vinh (Vietnam)

Silver : Felipe Almeida Wu (Brazil)

Bronze: Pang Wei (China) 

This is also Vietnam's first ever gold medal in any Olympic event.

Argentina's Paula Pareto wong gold in Judo Women's 48 kg

Gold : Paula Pareto (ARG)

Silver : Jeong Bo-kyeong (KOR)

Bronze : Ami Kondo (JPN)

Bronze : Galbadrakhyn Otgontsetseg (KAZ) 

Hungarian épée fencer Emese Szász won Gold medel

GOLD :Emese Szász (HUN)

Silver : Rossella Fiamingo (ITA)

Bronze : Sun Yiwen (CHN)

South Korea won men's team archery

[GOLD] South Korea

B.C. Ku, W.J. Kim, and S.Y. Lee

[SILVER] United States

Z. Garrett, B. Ellison, and J. Kaminski

[BRONZE] Australia

A. Potts, T. Worth, and R. Tyack

First Rio gold awarded to US air rifle shooter

GOLD : Virginia Thrasher (USA)  [208.0 points]

Silver : Du Li (China) [207.0 points]

Bronze : Yi Siling (China) [185.7 points]