Last Updated: 21/02/13 9:59pm
The referee blows his whistle to end a very entertaining contest. Liverpool gave it everything but tonight's 3-1 win isn't enough because of Hulk's away goal.
Reina comes up for the next corner but the ball is cleared. Zenit break quickly but Carragher stops Hulk.
Liverpool run out of space in the Zenit box and the ball is cleared. Time is running out for the Reds.
Rodic can't find Hulk with a pass behind the Liverpool defence. Zenit will break quickly as Liverpool push but that's the name of the game now.
Can Liverpool find this goal? They are starting to run out of time but Zenit still look shaky and chances should be created.
Neto stays strong to win the ball from Suarez in the Zenit box. There will be plenty of work for the away side's defence to do before this match is over.
The current situation is Liverpool need one more goal to progress with the score 3-3 on aggregate as Zenit have the advantage thanks to Hulk's away goal. Another goal from Zenit would leave Liverpool needing two to progress.
The corner results in Zenit getting a free-kick for a Suarez challenge on Malafeev. Looked the right decision from the referee.
Gerrard's half-volley from the edge of the box is turned behind by Malafeev. Corner to Liverpool as this great game continues.
He doesn't get that hat-trick just yet. Suarez's latest free-kick is easily parried away from danger by Malafeev. Zenit clear.
Liverpool have another free-kick on the edge of the box as Neto hauls down Asdsaidi. Can Suarez make it a hat-trick of free-kicks tonight?
Hulk fires a free-kick from 40 yards just wide of Reina's left hand post. The Liverpool goalkeeper seemed happy to let the effort fly by but it wasn't far away.
There is still lots of fun to expect in this match. Liverpool still need one more goal but Hulk could be a big threat on the break for Zenit.
It really is game on at Anfield. Liverpool have been fantastic since falling behind to Hulk's goal. Zenit have not and look really shaky.
There has been a double Liverpool change with Shelvey and Oussama Assaidi on for Allen and Henderson.
GOAL SUAREZ! Suarez beats Malafeev with a fantastic free-kick from 30 yards. That was really, really, really super and no goalkeeper in the world would have stopped it. We are now level at 2-2 on the night and 3-3 on aggregate. Liverpool still need another because of Hulk's away goal earlier.
Zenit still have a big advantage in this tie despite Liverpool's strong display so far tonight. They lead 3-2 on aggregate and also have an away goal. That means Liverpool need two goals to progress - and more if the Russians score again tonight.
Hulk tries to charge his way towards the Liverpool goal. He is stopped by Lucas and Liverpool take control again.
Zenit are lucky not to concede a penalty as Hubocan handles in the area. He got all muddled up and the ball hit his arm as he looked to head it. The referee waves play on.
Good defensive work from Hubocan as he heads Enrique's cross away from Agger. Liverpool continue to pose questions.
Agger fires a wild effort high and wide of the Zenit goal from 35 yards. Nothing for Malafeev to worry about there.
Will be interesting to see if Liverpool can keep the momentum they had at the end of the first half. Zenit were certainly finding it hard work to stop the Reds.
The second half has started and Zenit have made a couple of changes. Viktor Fayzulin and Domenico Criscito have replaced Danny and, as expected, the injured Lombaerts.
There are also half-time price boosts at Sky Bet for the 2-2 draw at 8/1, Suarez to score next at 4/1, Hulk to score next at 9/1, Suarez to score next & Liverpool to win 5-1 at 40/1 and Hulk to score next & the 2-2 draw at 20/1.
Liverpool, after being out at 9/1 to qualify after Hulk's goal, are now 11/4 with Sky Bet to make it through from this tie. Zenit can be backed at 1/4 to progress. Liverpool are 1/6 to win on the night, Zenit are 16/1 and the draw is 5/1. The 4-1 win Liverpool are currently chasing can be backed as a price boost at 11/2.
The referee brings an end to a very interesting first half. Liverpool lead 2-1 on the night but trail 3-2 on aggregate. Two goals needed from the Reds because of Hulk's goal - and that is if Zenit don't score again tonight.
Gerrard's free-kick from the left flank is easily gathered by Malafeev. Lombaerts remains off the pitch as we near the break.
Lombaerts match looks like it will be over as he leaves the field on a stretcher. He was injured while twisting off the ball just before Allen's goal.
Liverpool now lead 2-1 on the night but trail 3-2 on aggregate. The Reds need two more goals to go through because of Zenit's away goal earlier in the evening.
GOAL ALLEN! Allen's initial header in the six-yard box is parried by Malafeev and he finds the back of the net with his second effort. Game on!
The Anfield crowd are getting right behind Liverpool when they reach the final third. We should see more and more action as the Reds are forced to focus on attack.
Another Downing cross is collected by Malafeev in the centre of his six-yard box. The winger needs to produce a bit more quality as Liverpool go for goals.
Downing's cross from the right is knocked away from danger by Nicolas Lombaerts. Zenit happy when they have men behind the ball.
Liverpool have responded really well to Hulk's goal. They are level on the right but still lots work needed. Three more goals required to qualify if Zenit don't score again.
Danny goes close as he sends a volley from the edge of the box just wide of Reina's right hand post. Good effort from the Zenit forward.
Henderson's cross from the right is headed clear by Anukov. This match has plenty of action at the moment.
Hulk tries his luck with a free-kick from 40 yards but it goes straight in the wall and Liverpool clear.
A bit of panic as Zenit break. Reina fails to connect with a volley but the ball is scrambled away. Hulk then takes possession and his shot is turned behind for a corner, which is cleared.
Gerrard wins a free-kick right on the edge of the right hand side of the Zenit box. The away side are finding the going tough in the last few minutes.
Remember Liverpool need to win by a three-goal margin to progress from this tie. Zenit's away goal has seen to that.
GOAL SUAREZ! The free-kick is finally taken and Suarez fires the ball home. It went straight through the Zenit wall and that really wasn't great from the away side.
We wait for the free-kick to be taken as both sides argue about where it will be taken from. Igor Denisov is booked for his part in the fun and games.
Agger produces a great run from the halfway line and wins a free-kick on the edge of the box. Super work from the defender.
Suarez is ushered away from danger in the Zenit box and the away side clear. The Reds striker has been lively so far but nothing too much for the Russians to worry about.
Zenit have been in control of possession since taking the lead. Liverpool have been really knocked back by falling behind.
That leaves Zenit in complete control of this tie. Liverpool now need to score four goals tonight to go through as a result of the away goals rule.
GOAL HULK! Carragher fails to connect with the ball as he tries to play a backpass from just inside the Liverpool half. Hulk takes advantage as he runs through one-on-one with Reina and easily finds the back of the net. Zenit leads 1-0 on the night and 3-0 on aggregate.
A loose pass from Danny give Liverpool a throw deep inside their own half. We haven't seen too much from the away side in attack so far.
Suarez runs out of space in the Zenit box and the ball is cleared. Liverpool continue in their bid to find a bit of space in the final third.
Still even in this match. Liverpool have started fairly brightly but nothing to worry Zenit with the 2-0 advantage from the first leg.
Gerrard's free-kick finds the stretching Daniel Agger at the far post. The defender keeps it play but it doesn't lead to anything as Zenit clear.
Liverpool win a free-kick on the right flank as Tomas Hubocan handles the ball in a tangle with Suarez.
Gerrard sends a wild free-kick from 30 yards high and wide. Nothing for Malafeev to worry about so far tonight.
Enrique chests the ball back to Reina as Hulk looks to cause a few worries. The Zenit striker is one of the main men to watch in this match.
Zenit run out of space on the edge of the Liverpool box and Jamie Carragher blasts the ball clear. Pretty even contest so far.
Henderson involved again as he looks to test Malafeev from outside the box. No problem for the Zenit goalkeeper as he easily saves.
Luis Suarez can't take control of Jose Enrique's long ball forward and Vyacheslav Malafeev gathers possession.
Zenit have a 2-0 advantage from the first leg. Fair to say that gives Liverpool plenty of work to do tonight.
Only five minutes until kick-off. Newcastle and Tottenham have already progressed to the next stage of the Europa League tonight. Can Liverpool join them?
Martin from Preston writes: 'I'm on my way into the ground. There is a great buzz round the ground, I'm going for a 3-0 win to the Reds. Hopeful I know.'
Liverpool are the 8/13 favourites with Sky Bet to win tonight's match. Zenit are 4/1 and the draw is 3/1. The Reds are 11/4 to qualify and Zenit 1/4 to progress. You can get price boosts for Liverpool to 2-1 at 15/2, Steven Gerrard to score first at 13/2, Zenit to win 1-0 at 16/1 and Hulk to score first at 15/2. Click here for all the Liverpool v Zenit betting markets
Liverpool make two enforced changes tonight. Joe Allen and Jordan Henderson, who both played in Russia last week, return to the side in place of ineligible pair Daniel Sturridge and Philippe Coutinho. Zenit, spearheaded by £32million Brazilian forward Hulk, make one change from the first leg as Sergei Semak, who scored off the bench a week ago, comes into the starting line-up.
Here are tonight's teams - Liverpool: Reina, Johnson, Carragher, Agger, Jose Enrique, Lucas, Allen, Downing, Gerrard, Henderson, Suarez. Subs: Gulacsi, Assaidi, Coates, Fernandez Saez, Sterling, Shelvey, Wisdom.
Zenit St Petersburg: Malafeev, Aniukov, Luis Neto, Lombaerts, Hubocan, Witsel, Denisov, Shirokov, Danny, Hulk, Semak. Subs: Zhevnov, Bruno Alves, Criscito, Bukharov, Kerzhakov, Faitzulin, Rodic.