Reds' replay record and more pre-West Ham facts
Liverpool boast an impressive record in FA Cup fourth-round replays ahead of this evening's clash with West Ham United - find out more in club statistician Ged Rea's look at the facts below.
Jürgen Klopp's team will become the first Barclays Premier League outfit this season to play their 40th game in all competitions.
Liverpool have won six of their last nine away games in this competition - including all four last season.
The Reds' biggest away victory at this stage is the 4-0 scoreline they have achieved twice - beating Everton at Goodison Park in 1955 and Shrewsbury at Gay Meadow in 1996.
In fourth-round replays, Liverpool have won 12 and lost just five of 17. Ten of those games were away from Anfield, with the Reds winning six and suffering elimination four times.
The Reds have used 21 players in the three FA Cup games so far this season. The record for a single campaign is 22, set in 2011-12 and 2014-15.
This will be Liverpool's last ever visit to Upton Park before the Hammers move to Olympic Stadium next season.
Liverpool have lost only three of 17 penalty shoot-outs and have a 100 per cent record on spot-kicks in this competition, having beaten Portsmouth in 1992, Birmingham City in 1995, and West Ham in the 2006 final.
The Reds have never beaten the same team twice on penalties in the same competition.
In their last seven FA Cup ties with fellow Premier League teams, West Ham have won just once - they beat Everton on penalties in the third round last season.
Since beating Liverpool in January, the Hammers have found the net only once in the opening 45 minutes, a run stretching seven games.