Capital One Cup Opta Facts - Round 4
Everton v Norwich
Everton have been eliminated in six consecutive home fourth round ties, stretching back to 1991/92. They last won at home in the fourth round in November 1987.
These two sides have met twice before in the League Cup - Norwich were the victors in the third round in 1973/74 while Everton progressed from the fourth round meeting between the two in 1986/87.
The Toffees last reached the fourth round in 2011/12, losing 2-1 at home to Chelsea. The last time they got beyond the fourth round they reached the semi-final in 2007/08, losing, again, to Chelsea.
Norwich reached the fourth round in 2013/14 (knocked out by Manchester United) and victory over Everton would represent their best run since 2012/13 when they reached the quarter-final stage.
On only one occasion in the last ten have the Canaries won an away League Cup tie against a team from the same division as them (4-0 at Yeovil in 2009).
Hull v Leicester
Hull have reached the fourth round four times previously - three times in the 1970's - most recently in 2013/14, when they lost 8-7 on penalties to Tottenham. They have never progressed beyond the fourth round.
The Foxes, three-time winners of the League Cup, last reached the quarter-finals in 2013/14, losing 3-1 to Manchester City.
This is the third game between the two sides in the League Cup. They met twice (once in a replay) in 1973/74 and in the first round in 2002/03, with Leicester victorious 4-2 against a fourth tier Hull side.
The Tigers have kept clean sheets in their previous two League Cup ties, but have never gone three in a row without conceding in the competition's history.
Leicester have progressed from 13 consecutive away League Cup games against sides from a lower division than them, stretching back to September 2001.
Hull have won two of their last ten (L8) home League Cup fixtures against top tier sides, conceding 25 goals in that time.
Leicester striker Joe Dodoo has scored four goals in two games in the League Cup this season.
Sheffield Wed v Arsenal
This is the first meeting between Wednesday and Arsenal since May 2000, a 3-3 draw at Highbury in the Owls' penultimate Premier League game before relegation.
The two sides have met five times in the League Cup, with the Gunners victorious on all five occasions, including in the 1993 final.
The Owls haven't lost a home League Cup tie since August 2008 against Rotherham when they were beaten on penalties. They have progressed from seven in a row since then, conceding just one goal.
In only two of the previous 25 seasons have Arsenal been eliminated by a non-top tier team (Burnley in 2008/09 and Bradford in 2012/13).
Wednesday last reached the fourth round in 2001/02, when they reached the semi-finals.
Arsenal have kept one clean-sheet in their last 11 away League Cup games (4-0 at Newcastle in 2010/11).
Stoke v Chelsea
Stoke have eliminated Chelsea every time they've faced them in the League Cup, winning four ties including the 1972 final.
2015 winners Chelsea have reached the fourth round in eight of their last nine seasons, reaching at least the quarter-final in their last four seasons.
The Potters have reached the fourth round in seven of their last eight seasons, progressing twice (2008/09 and 2013/14).
Stoke have lost their last three home League Cup ties against Premier League opposition, twice in the fourth round.
The Blues are unbeaten in their last ten away fourth round League Cup ties (W9 D1), last losing in away at this stage in 1976.
Chelsea have netted 36 goals in their 15 League Cup games since the 2012/13 season.
Liverpool v Bournemouth
Liverpool have won five and lost none of seven games against Bournemouth in their history.
Bournemouth have won just one of their three fourth round ties in League Cup history, last season's 2-1 win over West Brom.
These two sides met in last season's quarter-final at the Vitality Stadium, with Liverpool winning 3-1. It is the only meeting between the two sides in the League Cup.
Eight-time winners Liverpool have scored in 29 consecutive home League Cup ties, last failing to score in November 1995 against Newcastle.
The Cherries have never won an away League Cup tie against a top tier side in 90 minutes (P14 W0 D3 L11).
The Reds have won progressed from only one of their last five League Cup games against Premier League opponents (2-1 against Swansea in October 2014).
Adam Lallana and James Milner created nine chances in the third round game against Carlisle.
Man City v Crystal Palace
Man City were knocked out in the fourth round last season by Newcastle, but had won their four previous fourth round ties prior to that.
This is the third League Cup meeting between City and Palace, with both sides registering one win each.
This is only the second time in 10 seasons that Palace have reached the fourth round; they reached the semi-finals in 2011/12, losing on penalties to Cardiff.
The Citizens have scored 18 goals in their last four home League Cup games.
Palace have failed to keep a clean-sheet in any of their last seven away League Cup meetings with Premier League sides, conceding 15 goals.
In their last 15 League Cup ties, City are averaging 3 goals a game (45 goals in total).
Palace kept a clean-sheet in their previous away League Cup game at Walsall; they haven't kept two away clean-sheets in a row in the competition since 1980.
Dwight Gayle has netted four goals in two League Cup games this season. He has eight goals in four League Cup appearances.
Southampton v Aston Villa
Southampton have lost four of their last five fourth round ties, winning only in last season's competition away at Stoke.
Villa last went beyond the fourth round in 2012/13, reaching the semi-final stage; they have progressed on each of the last three occasions they've reached the fourth round.
Both of the previous occasions these two sides have met in the League Cup has been at the fourth round stage, with each team winning one game each (Southampton in 1986/87, Villa in 1999/2000).
The Saints have won their last four home League Cup ties, losing just three of their last 17 ties on home soil, although all three defeats were to Premier League teams.
The Villains have progressed in five of their last six away League Cup ties with Premier League opposition, last failing in a West Midlands derby against Birmingham in the quarter-final in the 2010/11 season.
This is Southampton's first home tie since September 2013, playing six away since then, while this is Villa's first away tie since the first-leg of their 2012/13 semi-final against Bradford, also playing six at home since that game.
Man United v Middlesbrough
The Red Devils, four times winners of the competition, have progressed from the fourth round on five of the last six occasions they've reached this stage, losing only to Chelsea in a thrilling 5-4 defeat in 2012/13.
Boro have also progressed from the fourth round on six of the last seven occasions, last doing so in 2012/13 when they reached the quarter-final.
United have won 13 of their last 14 home League Cup ties, though the one they lost was to Championship opposition (Crystal Palace in 2011/12).
The Teesiders have been eliminated in five of their last six League Cup meetings against Premier League opposition. Their last League Cup game against a top-flight side ended in a 14-13 penalty shootout loss to Liverpool.
Man United have never lost a home fourth round tie, winning twelve and drawing two (which went to replays and second replays).
Boro striker Cristhian Stuani has scored four goals in two League Cup appearances this season.
These two sides have met in five ties previously in the League Cup, including in the semi-final in 1992. They most recently met in the competition in 2008/09, with Man United winning 3-1 at Old Trafford in the third round.