Thanks to Liverpool's English contingent, the Reds were able to overcome a determined West Brom side and record their first victory in the Premier League since August.
The game began rather tentatively as both sides eased themselves into a rhythm. The first big chance fell towards Liverpool in the 8th minute as Jordan Henderson - who switched positions with Coutinho to be in a more advanced role - took full advantage of the tactical switch as his burst into the box was cut short thanks to a foul. Steven Gerrard took the resulting free-kick but it was well met by Foster.
Soon after Rickie Lambert had two good chances to put Liverpool in front - the best was in the 18th minute when Martin Skrtle looped a ball over the West Brom defence. Lambert broke the offside trap and ventured into the box, although a tame effort made it easy for Foster to save.
From then on the game started to swing towards West Brom who had the best chances of first half fall to Saido Berahino. The first was in the 34th minute when Berahino broke free from the Liverpool defence only to shoot straight at Simon Mignolet.
The second was in the 41st minute when Berahino escaped Dejan Lovren's attention but mistimed his header and put it aimlessly over the bar.
West Brom would soon rue the missed attempts as Adam Lallana scored a contender for goal of the month with a well worked goal at the half-way stage.
The former Southampton man dribbled past three defenders before a give-and-go with Jordan Henderson, putting Lallana one-on-one with the goalkeeper. Lallana drilled in a left footed shot to put his side in front.
The second half began frantically and kept on rising in tempo as Liverpool looked to put the game beyond doubt and as West Brom looked to get themselves level pegging.
West Brom drew first blood when Javi Manquillo's poor pass let Saido Berahino - who was a real threat to the Liverpool backline - in on goal.
In a desperate bid to prevent a shot on goal, Lovren committed a professional foul on Berahino. Replay's showed the incident was outside the box but Michael Oliver did not have that hindsight and pointed to the spot. Berahino finished what he started by buring the spot kick, sending Mignolet the wrong way.
Incensed, Liverpool attacked without respite and got their just rewards on the 61st minute. Raheem Sterling dribbled into the box and was bundled over. Nonetheless, Sterling played on and more importantly, so did the referee.
Sterling got up and played the ball towards the on rushing Jordan Henderson who calmly put the ball into the back of the net.
Liverpool had 19 shots in comparison to West Brom's 8; the Reds also enjoyed 55% of possession to West Brom's 45%.
The result puts Liverpool up to 6th - level on points with Arsenal with 10 points; whilst a defeat for West Brom sends them down to 13th with 8 points.