No Regrets was the name given to Welsh rugby's three-year masterplan to give the national team the best possible chance of success at the 2019 Rugby World Cup in Japan. Here, acclaimed Western Mail rugby correspondent Matthew Southcombe reveals how this masterplan led to the 2017 tour success in Argentina, a clean sweep of the 2018 autumn internationals and, in 2019, a Six Nations Grand Slam, a record 14-game unbeaten run and a World Rugby No.1 in the ranking.