Chelsea manager Guus Hiddink claims that his team, following their nervous start to the game, made Paris Saint-Germain unstable with their attacking play.
The Blues suffered a 2-1 defeat in the first leg of the Champions League Round of 16 tie at Parc des Princesd, and they will now host the League 1 club in the return bout at Stamford Bridge on March 9.
Assessing his team's performance, Hiddink said: "We were a little bit nervous in the first 10 minutes.
"After that we started playing and got some chances and were a little bit unlucky with our final ball.
"We had possibilities before the equaliser. We had one or two chances to hurt them and they got a little bit unstable by the way we played."
Zlatan Ibrahimovic opened the scoring for PSG with a deflected free-kick in the 39th minute before John Obi Mikel responded for the visitors on the stroke of half-time, but second-half sub Edinson Cavani came up with a 78th-minute winner to give the French giants a slender advantage ahead of the second leg.