Wow.

Former Springboks head coach Rassie Erasmus was reportedly undergoing chemotherapy during his side’s famous Rugby World Cup in Japan last year, in a shocking revelation.

Erasmus was the leading force behind the Springboks, completely transforming them from fallen giants to world champions in a matter of months, but behind the scenes, he was battling with illness.

The former Munster head coach was diagnosed with a rare autoimmune disease called microscopic polyangiitis with granulomatosis in early 2019, according to Rapport.

The disease can severely impact the lungs, kidneys, sinuses and trachea, and while it is not cancerous, there was serious doubt leading into the tournament that he would not be able to continue to work.

The report adds that Erasmus continued with the treatment until March this year and it was considered successful but the fact that he not only led the Springboks in Japan with this terrible illness but helped them become world champions is truly an incredible feat.

Erasmus is already recognised as one best coaches in the world and is regarded as an absolute gentleman. The fact that he managed this will no doubt bring him respect of the highest level.