Ireland survived injuries to talismans Johnny Sexton, Paul O’Connell and Peter O’Mahoney to book a quarter-final clash with Argentina by beating France with some comfort, 24-9, on Sunday afternoon.
Peter O'Mahony's desperate try-saving tackle on Josh Furno spared Ireland's blushes in a 16-9 victory over Italy, as Joe Schmidt's men qualified for the World Cup quarter-finals.
Former Ireland flanker Kevin McLaughlin is the latest in a worrying trend of rugby stars forced to prematurely retire from the game due to concussion-related issues.
England will enter the World Cup armed with a confidence-enhancing 21-13 victory over Ireland but will know they should have emerged more convincing winners over the RBS 6 Nations champions in their final warm-up game.
Ireland will wheel out all available big guns for their final World Cup warm-up match against England at Twickenham on Saturday, except Cian Healy and Rob Kearney.