A change at the top would not occur for a record period of 508 weeks (from 16 November 2009 to 19 August 2019), when Wales became the top ranked team for the first time after defeating England at Cardiff in a World Cup 2019 warm-up test in August, following on a streak in which they won 15 of 16 tests, including a Six Nations Grand Slam. Two weeks later New Zealand returned to the top of the summit following Ireland's victory over Wales in Cardiff in a World Cup 2019 warm-up test. However, on 7 September 2019, Ireland defeated Wales again, this time in Dublin, and they were installed as the number 1 team for the first time in their history, which they held entering the 2019 Rugby World Cup.