He just doesn't look graceful, looks to be uneasy and maybe even off centre when running if thats possible. That injury before the world cup started, rushing back from a knee op which is crucial in movement, speed control and acceleration (having been through it myself multiple times) is a big no no. Then you could see it at WC2010.
His first goal for LFC, you see how easy and seamless it was. Even the Euro2008 final where he just went past Lahm so easily looking effortless, just like a world class player does.
But looking at his last goals for us bar the screamer vs Chelsea, they were all created by someone else or through balls which Chelsea rarely have done, unlike his older goals 07-09 where he could just create something himself if nothing was happening. Defenders don't fear him and back off anymore.
Even though I despise him leaving, I never genuinely wished his career would back-peddle this far, as he was once a joy to watch.