Polish tennis player Kamil Majchrzak received a 13-month suspension from professional tennis after testing positive for prohibited substances. The International Tennis Integrity Agency (ITIA) announced the suspension, which will last until December, following positive tests in November 2022. Majchrzak maintains he unknowingly ingested the substances through a contaminated isotonic drink.

The ITIA acknowledged Majchrzak's unintentional consumption, citing evidence including consultations with a dietitian about the supplement. During the suspension, Majchrzak is barred from participating in or attending any sanctioned tennis events.

In a statement shared on social media, Majchrzak detailed his efforts to identify the source of the banned substances. He explained that laboratory analysis of his supplements revealed the presence of the substances in an isotonic drink he had been consuming since September 2022, following advice from a nutritionist. The product's label did not list any banned substances, and Majchrzak noted its use by other athletes without incident.

Majchrzak emphasized the trace amounts of the substances found and their negligible impact on his performance. He also revealed that he initially faced a four-year ban, which was reduced to 13 months based on the evidence he presented. Expressing the emotional toll of the experience, Majchrzak affirmed his determination to return to professional tennis.

Majchrzak, 27, turned pro in 2013 and achieved his highest ATP ranking of 75 in February 2022. He holds a 30-41 career record.