Anyone watching it and care to explain it to me? 160 laps round a velodrome, seems to be teams (countries), but I dont quite get why they keep peeling off to the side?

Also the event before, was 1 team of 3 vs another team, why does the guy in front have bladed spokes on his front wheel and the 2nd 2 guys have aero wheels?

Sorry, but watching in German/swiss as on holiday and cant quite understand whats going on other than chris hoy and the british team were 4th at some point!!

the points just came up and said sprint 3 of 16, so I am guessing a sprint is 10 laps and you get points as to where you are after each sprint?