KANSAS CITY, Missouri, July 9 : Argentina and Switzerland meet again in the World Cup knockout stage on Saturday carrying memories of a tense match 12 years ago in Brazil, when Angel Di Maria's extra-time strike finally broke Swiss resistance and sent Lionel Messi's side through.Much has changed since that round-of-16 clash in Sao Paulo.Back then, Argentina were trying to balance the brilliance of Messi at his peak with the burden of ending a World Cup drought stretching nearly three decades. Switzerland, meanwhile, had become regular tournament participants but were still chasing a first quarter-final appearance since 1954.Now, Argentina arrive as defending world champions after lifting the trophy at Qatar 2022, having also finished runners-up in 2014. Messi, now 39, is no longer at his a