Wales manager Chris Coleman has told Sky Sports News he is certain he has been involved in club matches on the continent that were not 100 per cent fair.
The issue of match-fixing has hit the headlines in recent days after an investigation by European police agency Europol uncovered evidence of corruption in 680 matches worldwide since 2009.
Former Fulham and Coventry boss Coleman - who has also managed in the top divisions in Spain and Greece with Real Sociedad and Larissa - is not surprised by the findings.
The 42-year-old claims his suspicions were aroused by incidents in matches during his time in Europe, but insisted that he had seen no evidence of wrongdoing in the United Kingdom.
Coleman told Sky Sports: "I've managed in Spain and I've managed in Greece and some of the games I've been involved in, I can tell you, weren't fair. Something was going on.
"You can't pinpoint it, you know there is something going on because some of the decisions that are made during the 90 minutes, or even some of the performances of the opposition, you are scratching your head. Bizarre things.
"So you know there is something not quite right. I didn't know anybody who was connected with it, but it was different to what I've been used to.
"I can honestly say with my hand on my heart, and I'm proud to say it, in all my experience of managing on our island I've never been suspicious of anything, never been suspicious of a referee being corrupt.
"I've never been suspicious of my own players, or the opposition players, or the opposition manager or anybody on my staff of being corrupt. I have never, ever, seen it, honestly.
"I am looking at the statistics surrounding the corruption which is frightening, startling and shameful.
"You are always going to get one or two who try and bend the rules but on that scale is alarming and disappointing."