The game in Lisbon is a hard one to call as these are two teams who are very closely matched.
Luis Enrique thinks PSG is "more structured" and credits Emery for that improvement. If a couple of crosses had been delivered with more accuracy, he might have added a headed goal or two to the scoreline. They also have free-scoring Edinson Cavani up front who has scored 31 times in 30 games this season.
Blanc was derided for being tactically unsophisticated, relying too much on Zlatan Ibrahimovic and failing to get past the Champions League quarterfinals.
Emery won the Europa League for three consecutive years with Sevilla and was appointed by PSG with European success in mind.
PSG will know they need a good result at home if they're going to have any chance of making it through. Their second goal summed up the difference between the two sides in the first period.
After Draxler was felled on the edge of the area, Di Maria lined up the subsequent free-kick.
PSG were electrifying, and Marco in the middle was the conductor of everything they did well.
Angel di Maria scores twice as Paris Saint-Germain record a 4-0 win over Barcelona in the first leg of their last-16 clash in the Champions League.
A tired Barca wilted against the intensity of Diego Simeone's crew, which is why Luis Enrique added depth and rotation to his squad. They scored four, but it is no flattery to say they could have scored more.
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It is a vital game for both sides as one of the reasons that Paris' Spanish coach Unai Emery signed by the French side was to help them get over the hurdle of the last-16 to establish themselves among the Champions League elite, reports Xinhua news agency.
The sides will meet again at Camp Nou on Wednesday March 8.
"Every year you have to win trophies and that's how it is".
Those are the stakes for the managers.
Luis Suarez, Neymar and Lionel Messi have all been kept quiet by an inspirational display from PSG. Suarez is Uruguay's all-time leading scorer; Cavani is second. Thiago Motta also missed out for the hosts through suspension, which opened up a start for Adrien Rabiot in central midfield.
Oh, yeah. And then there's Messi.
At just 23, left-back Digne has already experienced the demands at the top level with PSG in his homeland and Roma in Italy, but nothing comes close to the demands he faces day-to-day since joining Barcelona in July.
But to conclude, we return to the men on the respective benches.