Guerrero after the match selection for the 2018 World Cup against Argentina failed the doping test. There were fears that this season Kowalski will not play.

Without Guerrero Peru beat New Zealand and qualified for the World Cup. Now, for Paulo himself, good news has come. According to Globo Esporte, an additional examination showed that he did not use cocaine. Thus, Guerrero will be able to play at the World Cup in Russia.

Most likely, the doping test was failed for the first time because of tea from coca leaves, which in South America is completely legal and is used to reduce the negative effects of staying in the highlands.