Eagles star Willie Rioli missed West Coast's  preliminary final against Geelong. Because ASADA had seen him pour an unknown liquid into his sample. Willie Rioli had not given a positive test to banned substances and may be banned for 4 years.

If the ASADA official see's a player trying to tamper with a sample right in front of their eyes, and they allow them to do it. The ASADA official should be fired. 

ASADA officials watch the player pee into the container, Close the container and walks away with it. Never to be seen by the player or anyone else outside of the Australian Sports Anti-Doping Authority.

ASADA needs to change the way they conduct these tests. If they see a player trying to tamper with a sample, the player should be named and fined within that week of the test, not wait until a final.

That is why an investigation into ASADA needs to be conducted and their drug testing protocols need to be changed.

Willie Rioli's Ban should be dropped and he should be allowed to play Football next season, and only be fined.