The International Tennis Integrity Agency [ITIA] have banned Goncalo Oliveira for four years due to a positive drugs test.Oliveira was given a provisional suspension in January after he tested positive for methamphetamine from a sample two months prior.Oliveira has been banned for a positive drugs test he claimed was caused by kissingGettyHe had an in-competition doping control test taken at the Manzanillo Open in Mexico.Oliveira claimed that ‘contamination via kissing or environmental contamination’ caused his positive test of the banned substance.But an independent tribunal did not receive ‘clear, cogent, persuasive or concrete evidence’ of either from the 30-year-old.As per the ITIA, the Portuguese-born Venezuelan has suspended for four years under the Tennis Anti-Doping Programme [TADP].Oliveira was sent a pre-charge notice of his anti-doping rule violation [ADRV] on January 17.This came under article 2.1, the presence of a prohibited substance in a player’s sample, and/or article 2.2, the use of a prohibited substance without a valid Therapeutic Use Exemption [TUE].Both of his A and B samples contained methamphetamine, which is a stimulant on the 2024 World Anti-Doping Agency Prohibited List.Oliveira’s results, prize money and ranking points from the Manzanillo Open have been forfeited.All of the subsequent events he competed in between the dates of his positive test and provisional suspension have followed suit.His suspension will end on January 16, 2029, with Oliveira not allowed to play in, coach at or attend any ITIA-authorised event.Oliveira won’t be able to return to tennis until the start of 2029GettyDoping bans in tennisOliveira is the latest name to be sanctioned for failing a drugs test in tennis, with world no. 1 Jannik Sinner arguably the most high-profile.The Italian tested positive for the banned substance clostebol in his urine at Indian Wells in 2024.Sinner was banned for three months earlier in 2025 after he reached a settlement with the World Anti-Doping Agency [WADA].They accepted his explanation of the substance’s inadverted delivery by his physiotherapist.WADA also said he ‘did not intend to cheat’, and that the drug ‘did not provide any performance-enhancing benefit’ to him.WTA world No. 2 Iga Swiatek was hit with a one-month ban for her positive test of trimetazidine [TMZ].Sinner missed three months of the 2025 season with his banGettyThis came from an out-of-competition sample taken in August 2024.Her positive test was ’caused by the contamination of a regulated non-prescription medication [melatonin]’ she took for jet lag and sleep issues, and ‘the violation was therefore not intentional’.