The visitors twice surrendered the lead but still kept pressing and Osvaldo's goal in the 78th minute put them two points behind Villarreal.
Much of Espanyol's success so far has come at home but on their travels the Catalan outfit have been much less convincing, picking up just four points and one goal in six games. Atletico also boast a good home record with four wins and they climbed to sixth with victory at Real Sociedad last week.
They almost got off to the best possible start. A long-range shot by
The visitors were soon ahead courtesy of a hotly-disputed penalty as
The hosts hit back and Kameni had to get down smartly to stop Simao's shot from creeping in and the same player should have equalised ten minutes before the break. Reyes pulled the ball across the face of the goal from the right with Kameni clawing it away only for Simao to pounce but he blazed wide when faced with an open goal.
The hosts continued to press and in first-half injury time they drew level through Tiago despite Kameni's best efforts. Reyes took a corner from the right which Tiago headed goalwards to be blocked by Kameni's chest,
Both sides take risks
Both sides came out attacking in the second half with Simao a constant threat for Atletico and he almost put them ahead when he was played in by Reyes only for Kameni to block his close-range shot with his legs.
Espanyol regained the lead against the run of play in the 54th minute through Verdu. Osvaldo did most of the work, shoulder-barging Perea as both chased the ball before turning and releasing a shot
There were loud appeals for a penalty from the hosts when Aguero went down in the area but a goal kick was awarded. De Gea saved with his legs from Verdu but it was Atletico who scored the next goal as Aguero slotted home from
Aguero should have equalised but shot tamely into the side netting when through on goal.
