However, that episode has given the false impression that fixes are often about singular, small events. Whereas Asif and Amir were purposely bowling no-balls, a deliberate no-ball is often the signal that the fix is in and will affect the action that follows.
“A fix tends to be about sessions of play,” says Marshall. “Corruptors might approach opening batsmen or bowlers, and/or the captain, to try to influence a session of play.
“Not very often is it the whole match. Occasionally it has been, although that’s quite rare. I can’t think of an occasion where the corrupt act has been a single ball.”
Naveed and Anwar, the pair from the beach, have been joined by UAE team-mate Qadeer Ahmed in receiving a ban this year. So too Sri Lankans Dilhara Lokuhettige and Nuwan Zoysa, and former Zimbabwe captain Heath Streak – the latter a high-profile case given his standing in the game.
What links the six men is the lack of riches in their own country compared to the rest of the cricketing world – a vulnerability a would-be corruptor will look to exploit.
That search for vulnerability can also lead to other parts of the game.
“There have been women approached,” says Marshall.
“So far the betting market on the women’s game is relatively low. The reward for the corruptor is not great unless it’s a very high-profile match.
“Under-19 cricket is more popular. There are betting markets and streams, so we have had younger players approached or asked for information.”
If a player, coach or official falls foul of temptation, vulnerability or circumstance, they run the risk of being thrown out of the game.
There is a limit to the ICC’s jurisdiction over corruptors who come from the outside, although that does not mean Marshall and his team are powerless.
“We’ll report them to law enforcement if what they are doing could be a crime. We’ll talk to border agencies to try to stop them from getting in and out of countries,” he says.
“If there is someone in employment, we’ll talk to their employers about what they are doing. If we can get publicity, we’ll put their name in the public domain.
“We’re hoping to publish the names of people who are excluded from cricket because they are corruptors. There’s legal process to go through.”
There is a danger that cricket lovers can become cynical about what they see, to think that something too incredible to be true is just that.
But, for all he knows about the darker side of the game, Marshall has not lost his trust.
“I’m a fan who has my eyes open,” he says. “I trust the cricket I’m watching in virtually all cases. I also know there are corruptors watching the same cricket wondering where there is vulnerability and who they could approach.
“The threat will always be there, but we can disrupt these corruptors and make sure the people within the game are resistant to these approaches.
“You should believe in it. I do.”