A much-changed South Africa were unhindered by humid conditions as they dismantled Canada in Kobe, delighting Rassie Erasmus.
Cobus Reinach scored a hat-trick inside 20 minutes as South Africa thumped Canada 66-7 to reach the quarter-finals at the Rugby World Cup.
South Africa's fringe players must be at their best level against Canada to put themselves in contention of playing in the quarter-finals.
Nicola Quaglio has not escaped punishment for a tip tackle on Duane Vermeulen, while Andrea Lovotti also faced a three-game ban.
With just a four-day turnaround, the Springboks opted for changes for their Rugby World Cup clash against Canada.
South Africa put 14-man Italy to the sword to put one foot in the quarter-finals, but Rassie Erasmus says there was room for improvement.
Ruthless South Africa moved to the top of Pool B by dishing out a seven-try hammering to Italy.
South Africa's powerful pack will be expected to lay the foundations when the Springboks face Italy in a crunch World Cup clash.
Rassie Erasmus is focusing on a "major forward battle" against Italy, but South Africa have lost utility back Jesse Kriel to injury.
South Africa scored nine tries but could have done better against Namibia, said boss Rassie Erasmus.
South Africa were expected to beat Namibia without any problems, and that was how it played out as Rassie Erasmus' side grabbed nine tries.
A much-changed South Africa will face Namibia as Rassie Erasmus' side look to kick-start their Rugby World Cup campaign.
Schalk Brits will start at number eight for a much-changed Springboks side against Namibia.
The Springboks called up Thomas Du Toit to replace the injured Trevor Nyakane at the Rugby World Cup.
New Zealand started their Rugby World Cup campaign impressively but Steve Hansen said: "There's plenty of stuff we can work on."
A penalty count heavily in their favour was key to securing New Zealand victory over South Africa, according to Rassie Erasmus.