Perth punish Adelaide errors to take the win

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Perth pair Diego Castro and Andy Keogh have scored in a convincing 2-0 away win against Adelaide United to continue the Glory's march towards the A-League's Premiers Plate.

Castro's deflected first-half goal was followed by substitute Keogh's clinical second-half strike on Friday night at Coopers Stadium.

The Perth pacesetters' comprehensive triumph extends their gap atop the table to nine points ahead of weekend games.

But fifth-placed Adelaide, now five games without a win, could slip to sixth by the end of the round with their finals place in peril.

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The Reds were bossed by the Glory, who made Adelaide pay for two blunders.

Castro rewarded Perth's early dominance in the 35th minute, though with a dose of fortune.

After a sloppy clearance from Adelaide goalkeeper Paul Izzo went straight to Perth's Ivan Franjic, the Glory right-back found Castro 15 metres out.

The Spaniard turned onto his right boot and fired a shot which was headed wide but deflected off United defender Scott Galloway into the net.

Perth, with a fluency befitting a team with just one loss in 22 rounds, were causing Adelaide problems all over the park - their halftime lead could have been more but Izzo denied attackers Chris Ikonomidis and Joel Chianese with diving saves.

Adelaide injected speedster Nikola Mileusnic, making a return from a month-long absence because of an ankle injury, into the fray after the break.

And Danish signing Ken Ilso soon followed as the Reds searched in vain for an attacking combination to threaten the visitors.

But their fate was sealed in the 70th minute when captain Isaias turned over possession in his defensive half - his long, sideways pass was smartly intercepted by Keogh.

The Irishman dashed forward unchallenged and, when 15 metres out, expertly slotted into the right-side of the net for his 13th goal this campaign.

Source AAP