Jonathan Sexton dusted off the cobwebs and another concussion scare to prove Ireland's match-winner against France again.
On his return from an enforced 12-week break due to repeated concussions, Ireland's gutsy first five-eighth kicked 15 points in a man-of-the-match display which set up a mouth-watering clash against England here in Dublin on March 1 between the two unbeaten sides in the Six Nations.
Yet the spectre of head injuries again loomed in the Championship following a series of blows here, not least to Sexton. His face was smeared with blood and he was clearly unsteady on his feet after a gruesome clash of heads with France centre Mathieu Bastareaud.
Both were forced off for assessment for concussion and returned 10 minutes later, with Sexton, sporting stitches, kicking a further penalty that kept Ireland out of reach despite France lock Romain Taofifenua scoring the game's only try.
When France unleashed their 120kg wrecking ball Bastareaud at No10, Ireland knew it was coming and after Sexton bore the brunt, Tommy Bowe and Robbie Henshaw were in close support to drive the Frenchman on to his heels and win a scrum. It set the tone for the rest of the game.