It should hardly be a surprise when a player scores against their former club.
If a player leaves under good circumstances, then a positive reception from their former supporters, the experience of playing against the team in training, and even familiarity with their former stomping grounds can all factor into making their return a happy one for them and a miserable one for their old club.
If they've left under less amicable conditions, under a cloud, then in addition to these factors they have great motivation to make a point against their former employer, to make clear the error of their decision and to show them what they're missing.
There are a surprising number of ex-Liverpool players still in the Premier League this season. This could be seen as a good thing—some have found their level lower down the division, and the club has strengthened in their respective positions by replacing them.
However, it's hard not to see the departures of certain players to title-challenging sides either as evidence that Liverpool can't hold on to their best players like they once could, or that some mistakes have been made in the recent past.
The relatively short space of time in which Rafa Benitez, Roy Hodgson and now Kenny Dalglish have all sought to put their stamp on the club has resulted in some departures that may have been about bringing in "their" players in place of another manager's—justifiable but difficult when the departing players in question have shown promise.
Here are 10 former Reds who Dalglish will hope his newly assembled side can keep at bay.