Erling Haaland and Dortmund defeat PSG in Champions League
Erling Haaland celebrates his second goal against PSG in Dortmund's Champions League win. Sascha Steinbach/Shutterstock. 

Liverpool suffered their first defeat of 2020 during the opening batch of Champions League last-16 matchups, with the Reds trailing Atletico Madrid 1-0 ahead of their Anfield return next month.

Saul Niguez’s fourth-minute separated the two teams at the Wanda Metropolitano, with the site of their Champions League triumph last June not yielding the same fortunes almost nine months on.

Borussia Dortmund also won at home on Tuesday when they defended their borders from visiting Paris Saint-Germain. Erling Haaland once again glistened on Europe’s biggest stage and bagged goals either side of a Neymar equaliser to put the Black and Yellows in the driving seat in their tie.

The only team to win away from home on Matchday 1 was RB Leipzig, who triumphed over Tottenham Hotspur thanks to a Timo Werner decider from the penalty spot.

Jose Mourinho was without attackers Harry Kane and Son Heung-min for the visit of Julian Nagelsmann’s side, who could have easily scored more in their visit to Tottenham Hotspur Stadium.

Atalanta continued to make the most of a historic campaign and thrashed Valencia 4-1 in their opening-leg encounter. Hans Hateboer netted in each half to complement strikes from Josip Ilicic and Remo Freuler, while Denis Cheryshev’s 66th-minute contribution gave Los Che a lifeline.

The Italians have played some of the most attractive football in Europe this term and look like favourites to advance again in their maiden Champions League campaign provided they can survive Valencia’s comeback attempt in the reverse fixture on March 10.