If anyone knows about the complexities of anti-doping rule violations, it's Greco-Roman wrestler So Sakabe.

After overturning a positive drug test and avoiding a two-year ban from the sport, Sakabe has filed a lawsuit against two generic pharmaceutical manufacturers that he claims gave him contaminated drugs.

The 26-year-old Japanese Self-Defense Forces member says half the battle is to prove that he is no cheater, the other half is to educate athletes and those who work with them about the effort they must make to not fall afoul of anti-doping rules.