Liverpool icon Aldridge: Carragher phenomenal against Chelsea
The veteran defender was outstanding in the shock 1-0 win.
"Before kick-off on Sunday I was asked if I was concerned about Jamie Carragher coming back into the side for such a big game after a long time out," Aldridge told liverpoolfc.tv.
"I was never worried. It's not like Carra had a leg injury and since he damaged his shoulder in November he's been able to keep his fitness up. He will have spent hours in the gym because he's such a good pro and it showed.
"Carra pushed himself to the limit at Stamford Bridge to make up for his lack of match fitness and his reading of the game was phenomenal.
"At 33 he still has so much to offer. People went on about Sami Hyypia losing his pace but in his last year at Anfield he was excellent and he's still playing at 37.
"I played until I was nearly 39 and the fact is the older you get, the wiser you become. Your brain works quicker than your legs and you see things faster.
"The block he made to deny Fernando Torres was typical Carra."