That Ireland won the Six Nations last year without Sean O'Brien is a testament to the depth of Joe Schmidt's squad. The Tullow Tank is back now though, completing the full game against France.
With less that nine minutes on the clock yesterday, he showed us exactly what we've been missing.
The ball shot out the back of an Ireland scrum just outside their own 22. Conor Murray fell on the ball and was immediately enveloped by the opposition. To the rescue came the Carlow man. Before a penalty or turnover was conceded he decimated the ruck, giving his side some clean ball.