The Champions league semifinals resume this week with Real Madrid and Juventus looking to defend big first-leg victories and book their trip to the title game in Cardiff.
Madrid will carry a 3-0 advantage from the first leg when it visits Spanish rival Atletico Madrid to try to return to the final for the third time in four seasons.
Juventus will hold a 2-0 cushion from the first game when it hosts Monaco to try to make it to the final for the second time in three seasons.
Madrid won the title in 2014 and 2016, both times against Atletico, while Juventus lost the decider to Barcelona in 2015. The Italian club is seeking its first Champions league title in more than two decades.
Atletico and Monaco will need historic comebacks to keep alive their hopes of winning Europe's top club competition for the first time.
It could be a momentous week for Juventus.
Massimiliano Allegri's side has a chance to return to the Champions league final and clinch an unprecedented sixth Serie A title.
"First we have to recover some energy and then we will focus on Monaco," Allegri said after Juventus' 1-1 draw against Torino, which still left the club in position to secure the title when it visits second-place Roma five days after the game against Monaco.
"Passing the round is not a given," he said. "Roma comes after."
Allegri had the luxury of resting several of his key players in the derby match and Juventus struggled at times against Torino despite playing with a numerical advantage for more than half an hour. The Bianconeri needed a stoppage-time equalizer from substitute Gonzalo Higuain as they missed extending their league record to 34 successive home wins.
Juventus will again look to Higuain to lead its attack on Tuesday against Monaco, especially after the Argentina forward ended his negative streak with both goals in the first leg. Higuain hadn't previously scored in a Champions league knockout match since 2013.
Monaco needs just one more goal to reach 150 for the season but at least two to have a chance of reaching the final.
"We have to be confident against Juventus, even though it's going to be very difficult," coach leonardo Jardim said. "We must keep playing good football the way we know. If we score early on, maybe that can change things."
Jardim will be hoping 18-year-old striker Kylian Mbappe and top scorer Radamel Falcao do better than in the first leg, when both missed good chances to score against Gianluigi Buffon.
In order to keep Mbappe as fresh as possible for the return match, Jardim named him as a substitute away to Nancy on Saturday, when Monaco won 3-0 for a club-record ninth straight league win. Monaco moved closer to the French title and reached 149 goals in all competitions this season: The ideal confidence-booster before facing Juventus.
Mbappe only played 10 minutes late on against Nancy, but still had enough time to set up the third goal, while Falcao saved some valuable energy for Tuesday by coming off about 15 minutes from the end.