Anti-doping violations worldwide span multiple substance categories, with anabolic agents accounting for the majority of sanctions against athletes across all sports and countries. Data from sanctioned athletes reveals distinct patterns in prohibited substance use, with certain classes appearing far more frequently in violation cases than others.
Methandienone has been involved in 813 confirmed anti-doping rule violations across more than 50 countries, according to figures compiled by the Anti-Doping Database. The substance, classified as an anabolic steroid, ranks as the second most frequently sanctioned substance globally, after stanozolol.
Norandrosterone accounts for nearly one-third of all confirmed doping violations in Kenya, making it the country’s most frequently sanctioned substance, according to data from the Anti-Doping Database (ADDB). The anabolic steroid metabolite appears in 97 of 304 total Kenyan cases, with 94 linked to track and field athletes.
Clenbuterol has been registered in 495 confirmed doping cases globally. It is one of the most frequently detected substances among anabolic agents and ranks sixth among all steroids in the Anti-Doping Database.
Furosemide accounts for 13% of all wrestling doping violations, making it the most sanctioned substance in the sport. The Anti-Doping Database records 65 furosemide cases from 499 total wrestling sanctions, with the diuretic leading ahead of anabolic steroid stanozolol at 52 cases.
Jannik Sinner’s return from a three-month doping ban has reignited debate around fairness in anti-doping enforcement. While fans celebrated in Rome, Serena Williams and others questioned whether WADA applies its rules evenly.
The World Anti-Doping Agency (WADA) confirms that it has entered into a case resolution agreement in the case of Italian tennis player Jannik Sinner, with the player accepting a three-month period of ineligibility for an anti-doping rule violation that led to him testing positive for clostebol, a prohibited substance, in March 2024.
The International Tennis Integrity Agency (ITIA) has provisionally suspended Gonçalo Oliveira, a 29-year-old Portuguese-born tennis player who currently represents Venezuela.
Jannik Sinner’s doping case has ignited debate over how sporting authorities handle accidental ingestion claims. With trace amounts of Clostebol found in his system, the Italian tennis star insists he is innocent. But with past cases yielding vastly different outcomes, all eyes are now on the Court of Arbitration for Sport as it prepares to rule on his fate.
The Canadian Ice Hockey Player Dane Fox have tested positive for Cannabis. The club has taken him out for the next two games.