DORTMUND, Germany (AP) — Real Madrid and Borussia Dortmund met four times last season in the Champions League and Dortmund won both home games, including a 4-1 win that led to Madrid's elimination in the semifinals.
This time, Madrid holds a 3-0 lead from the first leg of the quarterfinals and the nine-time champion has never lost a Champions League tie after winning the opening leg by that score.
Here are five things to know before Tuesday's match:
RONALDO TARGETS MESSI:
Cristiano Ronaldo needs just one goal to break the scoring record for a single Champions League season and pass Lionel Messi's milestone.
The Ballon d'Or winner exited last week's 3-0 win over Dortmund with a sore left knee after he found the net for a 14th time this campaign in Europe's top club competition.
Ronaldo sat out his team's Spanish league match on Saturday to recover, but he is back in the squad after training with his teammates on Sunday.
Madrid coach Carlo Ancelotti said Ronaldo was not feeling pain any more but that he would not take any risks. "If he is 100 percent he will play," Ancelotti said.
PLAN 'B' FOR BALE:
If Ronaldo doesn't make it back in time, Madrid can still field an imposing starting 11 featuring Gareth Bale as it searches for its fourth straight semifinal appearance.
Ronaldo has missed eight games this season, and Real Madrid has yet to lose once without him.
Bale scored another long-range goal for Madrid in its commanding 4-0 win at Real Sociedad this weekend while Ronaldo rested his leg.
The Wales winger has scored four goals in his last three games and has netted 18 times in all competitions, since his 100-million-euro move from Tottenham.
"Last Wednesday's match at home was great, we played well and deserved to win, but it will be a different game in Dortmund," Bale said. "They'll come out fighting and we have to approach it like any other game, looking to win it and seal our place in the semifinals."
Madrid has scored in 22 consecutive away matches in the Champions League. But it has also lost four of them - and three in Germany.