A blood sample taken from England cricketer Graeme Swann when he was allegedly drink-driving may have been contaminated, a court has heard.
The off-spinner's trial resumed after his successful winter with the national team.
Swann was a key member of the side that won an Ashes series in Australia for the first time in 24 years.
He is in England's Cricket World Cup squad but has not travelled to Bangladesh as his wife is due to give birth.
He appeared at Nottingham Magistrates' Court for the latest hearing of his trial, which started in August but has faced several adjournments due to Swann's cricketing commitments. It has heard he was stopped by officers on patrol in the West Bridgford area of Nottingham on April 2.
The court previously heard he had drunk three or four glasses of white wine earlier in the evening to celebrate his birthday. When he returned to his £350,000 detached house in West Bridgford, he found one of his and wife Sarah's two cats - called Max and Paddy - stuck under the floorboards after builders had been working on their home.
Unable to find a screwdriver to undo the floorboards, Swann decided to drive his new white Porsche Cayenne to the nearest 24-hour Asda to buy a set of screwdrivers, the court heard.
His solicitor Phillip Lucas previously argued there was no case to answer on the grounds that of two samples of blood taken that night, it was the second that was analysed when the first was suitable for testing. That second sample showed Swann's blood had 83mg of alcohol in 100ml of blood, which is over the legal limit of 80mg.
But in December District Judge Julia Newton decided the trial should go ahead.
Defence expert Dr John Mundy, a forensic alcohol consultant who previously worked for the Metropolitan Police's laboratory, said the blood sample may have been contaminated.