While pioneers like Liam Hennessy laid crucial groundwork with early professional Irish teams during their Eastern European training camps, the current setup reflects years of scientific advancement and meticulous planning.
The Leinster contingent arrive transformed by Jacques Nienaber's system, a dramatic departure from Ireland's traditional Six Nations approach. Easterby must rewire players back to the established "Ireland Way" or boldly embrace Nienaber's methods.
Ahead of the Six Nations, England and Scotland must address lingering issues while Wales face a long road to recovery, while Ireland have struggled with inconsistency, discipline, lineout efficiency, and delivering complete 80-minute performances.
Twickenham stadium is showing its age. And English rugby appears caught in a bygone era, surpassed by the progress of other nations in both strategy and execution on and off the field.
Ireland's performance has stepped up a gear from the rugby world cup and from last year's tournament. Here are five ways the team is developing.
Ireland has some good rugby teams, but the national U20 side is arguably the outstanding one. The U20s have won 22 games out of 24 since 2019. What's behind the success of Ireland's underage development system?
In Marseille on Friday night, Ireland found another level. The post-Sexton era is looking promising.
Andy Farrell is not thinking in four-year cycles. This squad is optimised for winning the 2024 Six Nations, not the 2027 World Cup.
The longer Scotland keep the game close, the more confident they will become as they look to take advantage of Ireland's poorer second half performances.
When the ball is in play, a rugby referee has 138 potential penalties he may award, a staggering amount to assess while keeping up with elite professional athletes.
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