A Washington Post investigation of a vast match-fixing ring, and how the changing nature of gambling has corrupted tennis, is based on dozens of interviews with players, coaches, investigators, tennis officials and match fixers. The Post obtained tens of thousands of the central match fixer's text messages, hundreds of pages of internal European law-enforcement documents, and the interrogation transcripts of players. 1. Gambling on tennis has exploded in recent years, increasing to roughly $50 b
