IOC president Jacques Rogge waves to a familiar face in the crowd prior to a media conference in Tokyo on Thursday. ((Koji Sasahara))

International Olympic Committee president Jacques Rogge believes match-fixing and gambling represent the next big fight facing sports organizations and governments.

"We have made doping a top priority, now there is a new danger coming up that almost all countries have been affected by and that is corruption, match-fixing and illegal gambling," Rogge said Thursday.

Rogge cited the recent match-fixing problems in South Korean football and Japanese sumo as just two examples.

South Korean prosecutors have indicted more than 70 soccer players, gambling brokers and others for alleged involvement in a burgeoning match-fixing scandal, while Turkey is in the midst of a major match-fixing investigation.

In Japan, 25 sumo wrestlers and coaches were expelled from the sport after it was learned they were involved in throwing matches.

"This is the new fight we have to confront," Rogge said. "Today, you can't open up a newspaper without finding examples of this so we have to fight against it and this has to be waged by sports movements together with traditional and state authorities."

Rogge was in Tokyo to celebrate the 100th anniversary of the Japanese Olympic Committee.