The idea that David Walker only had one bet against horses he was riding against has not lasted very long.
David Walker, who was charged last week with betting against his own mount Watch Your Man in a head to head bet with St Ransom at Awapuni, has now admitted that it wasn't the first time that he had placed a head to head bet on a horse he was riding.
Walker has admitted to the Racing Integrity Unit that he had also placed a head to head bet on the Stacey Duggan trained Lil Mer in the Waverley Winter Cup on July 31st against Sam I Am.
Sam I Am finished seventh in the Winter Cup, four lengths in front of Walker on Lil Mer.
Waker's explanation for his lack of vigour on Watch Your Man at Awapuni was that he had got a bad case of cramp in his right hand.
At this stage it is not known what explanation Walker has given for his ride on Lil Mer at Waverley, who was quickly in the rear group and made no ground in the straight.
Walker has insisted in his discussions with the Racing Integrity Unit that these are the only times that he has placed a bet on horses other than his own mount and that he will defend the charges.
From comments from the Racing Integrity Unit it would appear that Walker has little option other than to plead guilty to the betting charges as they have CCTV footage of Walker placing the bets and collecting his winnings.
The biggest issue facing David Walker is not the charges over his betting activity which only carries a penalty of up to 12 months.
Rather it is weather he will be charged under rule 801 which involves committing a dishonest and fraudulent act where the penalty is any length up to and including a life ban.
The Racing Integrity Unit is continuing its investigations in advance of the hearing on September 18th.