Ireland scored six tries against England to earn a bonus point win in their U20 World Cup opener.
The Irish side won 42-26 in Santa Fe to make a great start in Pool B.
Reigning Grand Slam winners
Ireland came into the tournament as Six Nations Grand Slam winners and lived up to that billing.
Jake Flannery and Stewart
Moore scored first half tries, before David McCann scored twice after the break. Josh Hodnett and Ben Healy added two further tries.
They join Australia at the top of the table after the Wallabies beat Italy 36-12.