I know its still early , but yesterday i came across a market for how many gold medals he will win:[ he has to swim in at least 3 events for bets to stand]

3 - $2.30
4 - $3.00
2 - $4.20
5 - $12.00
1 - $15.00
0 - $17.00
6+ - $34.00

I suppose the market is pretty spot on, but you could have a go at one now and a saver when they start , what does anyone think.

cheers