Ronaldo record in Benzema's sights, Liverpool out to prolong perfect away run – Champions League in Opta numbers

Real Madrid and Villarreal have it all to do when they host Manchester City and Liverpool respectively in the second legs of their Champions League semi-final ties in midweek.

Fresh off the back of winning a second LaLiga title in three seasons, Madrid are aiming to overturn a 4-3 deficit against City following last week's thrilling first leg in Manchester.

That was the joint-highest scoring semi-final first leg in the competition's history, along with Liverpool 5-2 Roma in 2017-18, and more drama awaits in the Spanish capital.

Villarreal face an even bigger task, meanwhile, as they trail Liverpool 2-0 through an unfortunate Pervis Estupinan own goal and a Sadio Mane strike at Anfield.

However, only once before have the Reds won both legs of a knockout stage tie against Spanish opposition in the Champions League or its former guise as the European Cup.

So will it be an all-English final in Paris on May 28, or can the LaLiga pair turn things around on home turf?

Ahead of the second legs, Stats Perform digs into some of the best Opta numbers around the two semi-final ties.

To put the size of Villarreal's task into some perspective, only once before – Liverpool versus Barcelona in 2019 – has a team overturned a two-goal first-leg deficit at this stage of the Champions League.

Villarreal are unbeaten at home in Champions League knockout ties, albeit having won just two of their seven such games. The bad news, though, is that across those seven matches, neither side has managed to score more than once on any occasion.

If they are to have any hope of advancing then Unai Emery's men need to display far more attacking impetus than was on show last week, having attempted only one shot and failed to hit the target at Anfield. The last team to fail to record a shot on target across two legs of a Champions League semi-final was Deportivo de La Coruna in 2003-04, against Jose Mourinho's Porto.

Should Liverpool see the job through, they will become only the fourth side to reach the final of the European Cup/ Champions League on 10 or more occasions after Real Madrid (16), Bayern Munich and Milan (both 11), with their current tally of nine the most of any English side.

Jurgen Klopp's side have been formidable on the road in Europe this season, scoring 15 goals and conceding five across their five away Champions League matches, all of which have ended in victory. Should they win on Tuesday, they will boast the longest 100 per cent away record by any team in a single European Cup or Champions League campaign.

After netting in the first leg it is likely that Mane will again be selected in Liverpool's star-studded front three. The Senegal international has scored 14 knockout-stage goals for the Reds in the Champions League, leaving him one short of Chelsea legend Frank Lampard's record for the most for an English club.

The omens are good for City as they have progressed from nine of their previous 10 knockout ties in the Champions League after winning the first leg, the only exception being against Monaco at the last-16 stage in 2016-17 after squandering a 5-3 advantage to lose 6-6 on away goals.

Madrid have been eliminated from all five previous Champions League semi-finals in which they have lost the first leg, meanwhile, though they have advanced from two of their past three knockout ties when losing the first leg – against Wolfsburg in the 2015-16 quarter-finals and versus Paris Saint-Germain in this season's last 16.

Los Blancos, the competition's most successful side, have lost their past two Champions League games, though only once before have they lost three on the spin. Head coach Carlo Ancelotti, incidentally, has never lost three in a row with this his 178th match.

A draw would be enough to see City through, but they have won their last three matches against Madrid in the Champions League and could become the third side to win four in a row against them in UEFA's showpiece competition, the only previous sides to have done so being Ajax (between 1973 and 1995) and Bayern Munich (between 2000 and 2002).

City boss Pep Guardiola has had his fair share of battles with Madrid down the years, not least in the Champions League. The Catalan coach has won four matches against Los Blancos in the competition – only Ottmar Hitzfeld (seven) has won more – with half of those wins coming at the Santiago Bernabeu.

Karim Benzema has rescued Madrid a number of times in Europe this season, the Frenchman having netted nine times in the knockout stage alone. Only former team-mate Cristiano Ronaldo (10) has ever scored more in a single season, while Benzema could become the fourth player to score in both legs of the quarter-finals and semi-finals in a single season after Fernando Morientes (2003-04), Neymar (2014-15) and Edin Dzeko (2017-18).

While Benzema has rightly received plenty of plaudits, strike partner Vinicius Junior has himself played a huge part in Madrid's charge for a record-extending 14th European Cup. The 28 open-play chances created by the Brazil international is the most of any player in the Champions League since Dusan Tadic (36) in 2018-19.