Capital One Cup Quarter Finals Opta Facts - 01-02 Dec
Middlesbrough v Everton
Middlesbrough have twice made the quarter-final stage of the League Cup since lifting the trophy in 2004, losing to Blackburn in 2005/06 and Swansea City in 2012/13 (both 1-0).
This is the furthest Everton have got in the League Cup since 2007/08, eventually losing in the semi-final that season to Chelsea.
Boro have won the last two League Cup ties against Everton, beating them on penalties in Round 4 in December 2003, and 1-0 in Round 3 in October 2005.
The Toffees are unbeaten in six matches in all competitions v Boro, winning four and drawing two. The last time they met, Everton were 2-1 victors in an FA Cup quarter-final clash.
Boro's last two League Cup games v Premier League sides have ended in penalty shootouts - beating Manchester United in Round 4 but losing to Liverpool 14-13 last season.
Everton have fallen behind in all three of their League Cup matches this season, needing extra time in two matches to progress.
Cristhian Stuani is the joint-top scorer in the competition this season on four goals.
The Toffees have conceded in each of their last seven League Cup games away from home.
Stoke City v Sheffield Wednesday
Stoke City have now reached this stage in two of the last three seasons - they were beaten 2-0 by Manchester United in December 2013.
This is Sheffield Wednesday's best performance in the League Cup since making it to the semi-finals in 2001/02, losing to eventual winners Blackburn Rovers.
Stoke are winless in four matches in all competitions against Sheffield Wednesday, losing each of the last two at the Britannia Stadium.
The Owls have progressed from two of their three League Cup ties v Stoke City, though this is their first meeting in this competition since September 1999.
The Potters have progressed from nine of their last 10 League Cup ties against sides lower down the league pyramid than them.
Sheffield Wednesday have seen off two Premier League sides so far, defeating Newcastle in Round 3 then Arsenal in Round 4.
Stoke have alternated between being knocked out and progressing in their last six League Cup games at home.
The Owls have won 1-0 twice in their last three away games in the League Cup, losing 7-0 in the other to Man City.
Manchester City v Hull City
The Citizens have lost just one of their last nine meetings with Hull in all competitions (W5 D3).
Hull's only victory in any competition away against Man City came in the FA Cup in 1930, defeating them 2-1 in Round 5. Since then, they are winless in nine visits (D3 L6).
The only previous League Cup tie between the two sides came in October 1963, as Manchester City ran out 3-0 winners in Round 3.
This is unchartered territory for Hull, having never made past Round 4 of the League Cup before this season.
Man City have won their last six League Cup ties against sides from a lower division, scoring 24 times and conceding just two.
Hull have progressed from three of their last four League Cup matches against teams from a higher division, including both Round 3 and 4 fixtures this campaign.
The Citizens have hit five goals or more in four of their last five at the Etihad in this competition, failing to score in the other v Newcastle in October 2014.
The Tigers have shipped two or more goals in six of their last seven games on the road in the League Cup.
Southampton v Liverpool
Southampton have made the quarter-finals for the second successive season, but they lost at this stage to Sheffield United in 2014/15. The last time they went beyond this stage was in 1987, losing to opponents Liverpool in the semi-final.
Eight-time winners Liverpool are looking to reach the semi-final stage for the third time in five seasons.
Southampton have lost their last two home games (in all comps) v Liverpool, having won the previous three in a row.
The Reds have progressed in three of the last four League Cup ties against Southampton, most recently on their way to winning the trophy in 2002/03.
Sadio Mane scored and was sent off in the meeting with Liverpool in October, which ended 1-1 at Anfield.
Christian Benteke has scored in each of his last two games against Southampton, both in the Premier League.
The Saints have been eliminated in just two of their last 14 home games in this competition.
The Reds have conceded exactly one goal in each of their last four away games in the League Cup, progressing from two and losing the other two.