Barca looking to rediscover top form at Atletico

Football Soccer - Paris St Germain v Barcelona - UEFA Champions League Round of 16 First Leg - Parc Des Princes, Paris, France - 14/2/17 Barcelona's Gerard Pique in action with Paris Saint-Germain's Angel Di Maria Reuters / Christian Hartmann Livepic

BARCELONA (Reuters) - Title hopefuls Barcelona need to capitalise on a rare lapse by Real Madrid if they are to take full advantage of Valencia's midweek success against the leaders of La Liga.

The Catalan club must prevail at in-form Atletico Madrid on Sunday to step up the pressure on their rivals, whose 2-1 defeat at Valencia on Wednesday was only their second of the season.