Stan Hey: 6-5 Against

Punters need two televisions this weekend, or maybe one telly and a teenager to help with the zapping, as they follow their bets at Turnberry and Lord's. The Open Championship resumes after the cut and the bookmakers will all have formed new markets. So if you want to top up your bets or switch because they've flopped, the opportunity will be there.

The arrival of the betting exchanges, open all hours to all manner of bets, forced traditional bookies into accepting the practice of betting "in-running". After the first round, Tiger Woods had been pushed out from 5-2 to 11-2 by most bookmakers but remained favourite in their lists.

If this sounds like a way of making you "stay at the table", it's worth noting that betting in-running can work for punters – if you fancied England to hang on for the draw last Sunday, you could have pounced on enlarged odds during a fluctuating afternoon. The best time to bet again on the golf is tomorrow, when the final pairings, three-day form, Tiger's position and the weather are all known.

While the golf and cricket dominate the weekend, rugby fans cast their eyes south as the Tri-Nations series begins – South Africa are 6-4 favourites, with Australia outsiders at 5-2. Any spare cash should go on New Zealand at sportingbet's 7-4. And isn't it time Argentina were invited to the party?

*England were very far from winning in Cardiff and neither Alastair Cook nor Mike Hussey made cases for being top series batsmen. Cook is back in the runs and we expect for more from Hussey – but not too many.