Rassie Erasmus has ended the flyhalf debate. Manie Libbok wears the No 10 jersey when South Africa opens their Nations Championship campaign against England at Ellis Park on Saturday, with the Bok coach backing his playmaker to deliver when the tournament's first real stakes are on the table.

The selection removes the speculation that had been building around the pivot position heading into what is a defining home fixture for South African rugby. Erasmus has seen enough to hand Libbok the keys to the Springbok attack, and that confidence is not a token gesture — this is the Nations Championship opener on home soil against one of the heavyweight nations in world rugby.

Ellis Park is exactly the arena where reputations are made or dismantled. Libbok steps into it knowing the South African rugby public is watching every decision, every kick, every line of running. Control and creativity are the twin demands of the position at Test level, and Saturday will provide an unfiltered examination of whether the flyhalf can supply both under genuine pressure.

England arrive in Johannesburg with their own intentions. Marcus Smith leads their own attack with purpose, and the visitors have made no secret of their hunger to set a tone in the new tournament format. Libbok will not be orchestrating against a passive opponent.

For the Springboks, the Nations Championship beginning at home carries enormous weight. Erasmus has structured his selection around Libbok's ability to execute the gameplan, and the flyhalf now has exactly the opportunity he needs to stake a definitive claim on the No 10 jersey long term.

The choice is made. Saturday delivers the verdict. England travel to Durban next as South Africa's Nations Championship campaign takes shape.