Worrying times for Sbu Nkosi as the South African winger has reportedly tested positive for the use of a banned substance.

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The 28-year-old, who won the Rugby World Cup with the Springboks in 2019, was missing from the Cheetahs’ matchday 23 for the Currie Cup clash against the Bulls at Loftus this weekend and may have already played his final game.

According to a report by respected South African newspaper, the Rapport, Nkosi was tested by World Rugby along with three other Springboks in May this year.

His A sample reportedly tested positive for the use of anabolic steroids which is mainly used by bodybuilders.

If Nkosi’s B sample also tests positive, he faces a potential ban of up to four years and it is seldom the case that the A sample is positive and the B sample is not.