I just saw the most touching thing!
In the 50km walk, there was a bunch of guys together. An Italian bloke was closer to the people with the drink bottles than the Aussie when they were moving down the straight, so he grabbed a drink for himself then another one and passed it on to his opponent! Otherwise he wouldn't have got a drink! How sweet!
I told my mum and she said she heard that in another race (she wasn't sure which one) the guy who was coming first had a drink and knew that the person behind him hadn't got one and it was their last drink of the race, so he took a sip and then passed it back to the other runner! Now that's sportsmanship..