Top quotes from the Rio Olympics on Wednesday:

"This was a cataclysmic failure to oversee and protect those athletes."

- World athletics chief Sebastian Coe does not mince his words about the Russian doping scandal

"At the moment, he is the king of gymnastics like Michael Phelps and Usain Bolt in their sports, a multiple champion."

- Ukraine's Oleg Verniaiev has nothing but praise for Japanese master gymnast Kohei Uchimura

"No idea where we finished. Where did we finish?"

- Singapore's Justin Liu is all at sea after high winds hit the sailing venue

"I have never played in a game like that."

- Dan Bibby after scoring the extra-time winner in Britain's 5-0 rugby sevens win over Argentina

"The only way teams are going to be able to get us out of our comfort zone is trying to muddy the game up or, you know, do the little stuff to get to us."

- NBA star Paul George after the USA are run close by a physical Australia

"It shows how ruthless (rugby) sevens is."

- DJ Forbes laments New Zealand's shock exit from the rugby competition

"It's different from normal, it's very easy to see."

- Britain's Jack Laugher says he appreciates the diving pool's unusual -- and unintended -- green colour after winning the men's synchronised 10m platform

"My father used to say, 'Don't piss in my ear and tell me it's raining.'"

- Eyewitness Lee Michaelson is unconvinced by the official line that a media bus was hit by stones, maintaining she heard gunshots