The retired Liverpool defender kept 202 clean sheets during his distinguished 17-year career with the club, and currently holds the record for the most clean sheets of any defender to ever feature in the Premier League.
So when asked on Twitter what was the greatest clean sheet he ever kept at Anfield, the Sky pundit would certainly have a lot to choose from.
However the ex-England international went for one that helped Liverpool on their way to winning to most coveted trophy in European football, the Champions League.
It came in 2005, and at the time it was arguably the biggest match of the Liverpudlian's career. It was the second leg of Liverpool's Champions League semi-final tie against Chelsea; the first leg finished 0-0.
The game's only 'goal' came from Luis Garcia and to say it was controversial is a bit of an understatement.
The little Spaniard picked up the rebound from a clash between Milan Baros and Petr Cech, and dinked the ball toward an open net.
Chelsea's defender at the time, William Gallas, hoofed the ball away in what looked like a great goal-line clearance, but the goal was given, and it proved pivotal.
Liverpool's defence withstood a barrage of Chelsea attacks and bagged themselves a place in the final for the first time in 20-years.
And if their fans thought the semi was nerve-wracking, then they were in for a huge shock when they saw the final against AC Milan play out in an even more dramatic fashion.