Supercomputer predicts weekend's fixtures - with good news for South Africa against Ireland

Sports4Cast’s predictive model has delivered its verdict for every clash on this weekend’s international schedule, weighing form, history and performance data to generate projected scores and win percentages.

With each matchup offering its own storyline, the algorithm adds an intriguing layer to what promises to be a compelling few days of Test rugby.

New Zealand arrive in Cardiff favoured by Sports4Cast at 92%, projected to win 34–13, yet history already leaned heavily their way after 33 straight victories in this fixture. Wales, given just 6%, ride the relief of last week’s win and the hope of rare back-to-back triumphs.

New Zealand’s strike power remains the defining threat, and against a side that has struggled to break this long run of defeats, the All Blacks’ response after losing to England may prove decisive.

Dublin hosts another tense chapter of a rivalry that rarely produces blowouts, even as Sports4Cast edges the Springboks 51% to Ireland’s 45%, forecasting a 23–18 South Africa win. Ireland’s formidable home record and recent mastery in tight games set the tone for another enthralling contest, while South Africa’s European streak speaks to their consistency.

Both sides blend heavy-duty defence with prolific try-scoring in 2025, setting up a clash where territory, collisions and retained kicks could tilt the balance. With so many past meetings decided by narrow margins, this latest encounter promises more of that same razor-thin drama.

France close their campaign under the Stade de France lights carrying an 83% Sports4Cast win chance and a predicted 28–21 victory over Australia. Their home dominance in recent years, especially when leading at halftime, contrasts with an Australian side searching for stability after a difficult run.

France’s attacking edge in 2025 has been clear, while Australia’s turnover threat keeps them dangerous even when momentum slips. With the Bicentennial Trophy on the line and several recent meetings settled by only a couple of points, the Wallabies’ 14% shot belies their ability to keep France honest throughout another tense Parisian showdown.

Sports4Cast gives Scotland a commanding 95% chance to finish their autumn with a flourish, projecting a 62–9 win over Tonga. Despite their recent wobble at home, Scotland have historically dominated this fixture and will welcome a chance to steady themselves with fast tempo and width.

Tonga, rated at 3%, bring physicality but continue to struggle against Six Nations opposition. Their gainline success from the Pacific Nations Cup offers some optimism, yet Scotland’s past margins in this matchup and their high-volume ball-carrying make the hosts clear favourites to close the series with authority at Murrayfield.

England aim to complete a perfect autumn, assigned a 79% Sports4Cast chance with a predicted 32–20 win over Argentina. Their comeback victory against New Zealand sharpened confidence, but Argentina’s recent scalps—England themselves in 2022, plus South Africa and the All Blacks in the past two seasons—underline why they still hold an 18% upset chance. Both sides are unbeaten in this year’s series, adding weight to the finale.

England’s home advantage and improved second-half resilience may prove telling, yet Argentina’s form on European soil ensures this meeting retains the edge and unpredictability that has come to define it.