Cricket: No regrets for whistleblower McCullum

New Zealand skipper Brendon McCullum said Thursday he was shocked his evidence to a match-fixing probe was leaked but had no regrets and maintained confidence in the International Cricket Council.

McCullum said he stood by his evidence to the ICC, in which he reportedly told investigators that a high-profile cricketer dubbed "Player X" unsuccessfully attempted to recruit him into a match-fixing scam in 2008.

Taking a break from the Indian Premier League to be in New Zealand for the birth of his third child, McCullum said he was shocked to read the evidence he gave to the ICC in a British newspaper, describing his involvement in the investigation as long and stressful.

But the batsman said he would continue to cooperate with the ICC as all players had a duty to fight corruption in the game.

"There's still a long way to go I think," he told reporters in Christchurch. "Obviously it's been a number of years and the next little while will probably be quite tough as well, but my involvement in the investigation is ongoing."

McCullum declined to comment when asked if Black Caps great Chris Cairns was Player X. Cairns this week acknowledged his name was being linked to Player X but strongly denied any involvement in corruption or match fixing.

Despite the leak in Britain's Daily Mail, McCullum said he would not hesitate to recommend to any player who found themselves in the same situation to report the matter to the ICC.

"From the dealings I've had with the (ICC) group I've dealt with, I have confidence in them," he said. "How the leak happened, I'm not sure but I have confidence in them."

The ICC has launched an urgent investigation into the leak of testimony from McCullum, former batsman Lou Vincent and Vincent's ex-wife Eleanor Riley.

It has also stressed that there is no suggestion McCullum is under investigation and praised his cooperation with the corruption probe.