* Italy's Carmine Tommasone on Saturday became the first professional in history to step in to an Olympic boxing ring - and celebrated by teaching his opponent, Mexico's Lindolfo Delgado, a harsh lesson in Rio to claim a unanimous points decision by the judges.
* Australia’s John Millman posted the first double-bagel victory in Olympic history with a 6-0, 6-0 50-minute win over Lithuanian Ricardas Berankis in the singles first round.
* France's Camille Grassineau made history Saturday with the tournament's first try as rugby sevens made its debut at the Olympic Games.
* The first swimming world record of the Rio 2016 Olympics went down at the hands of Adam Peaty who broke his own previous world mark in the 100m breaststroke by 0.37 seconds, clocking 57.55 in Saturday's heats. He did that in his first-ever Olympic swim. Wow!
* Hungarian Iron Lady, Katinka Hosszu, finally claimed her first Olympic medal, on her fourth Games appearance, breaking the world record in the 400m IM by more than two seconds to take gold in 4:26.36. Hosszu looked like she was sprinting through the race and it's highly likely she'll shatter more records this week in Rio.
* Yusra Mardini, the teenager who braved a Mediterranean crossing in a leaky dinghy fleeing war-torn Syria, won her 100m butterfly heat in Rio Saturday to launch an "amazing" Olympic experience. “Everything was amazing. It was the only thing I ever wanted was to compete in the Olympics,” said the 18-year-old, who is representing the first ever Olympic refugee team. “I had a good feeling in the water so I'm happy for that.”Syrian refugee Yusra Mardini clocks 1:09.21 to win her 100 butterfly heat #Rio2016 pic.twitter.com/1AcUi8FYs4— Reem Abulleil (@ReemAbulleil) August 6, 2016
* In tennis, Japan's Taro Daniel, ranked No118 in the world, delivered the first upset of the men's singles draw by taking out world No25 Jack Sock of the United States, seed 14 in Rio.
* China’s world No64 Zheng Saisai shocked world No5 Agnieszka Radwanska in the women’s singles first round 6-4, 7-5. It comes as a huge disappointment for Poland’s Radwanska, who was forced to fly from Montreal to New York to Rio through Lisbon, a trip that took her to three continents and cross the Atlantic twice.
* Vietnam’s Hoang Xuan Vinh produced a pinpoint last shot to deny hosts Brazil an opening day gold medal in the men's 10m air pistol. The 41-year-old Vietnamese claimed gold with a total points haul of 202.5, with Wu in silver only .3 adrift.
* Greg Van Avermaet won a thrilling cycling road race to become the first Belgian man to claim an Olympic gold medal since swimmer Fred Deburghgraeve in 1996. Vincenczo Nibali was in the mix for the podium but crashed on the final ascent. “Words served no purpose, we looked at each other a moment but he was silent. We didn't say a word to each other, his morale was in tatters,” said Italy coach Davide Cassani on the aftermath of the late crash that knocked Nibali out of the bike race with a broken collarbone.
**Sources include AFP**