SHARPSHOOTER: Andy Keogh got on the scoresheet for Perth Glory in the 5-4 win over Melbourne City.
SHARPSHOOTER: Andy Keogh got on the scoresheet for Perth Glory in the 5-4 win over Melbourne City. TONY MCDONOUGH

Defence went out the door for City and Glory

FOOTBALL: Preparation for next Sunday's A-League semi-final between Melbourne City and Perth at AAMI Park will be as much mental as it will be physical.

Having defeated City 5-4 in a crazy season-ender at nib Stadium on Sunday night, the Glory must like their chances of coming to Melbourne and repeating the dose.

Likewise City, whose season has fallen in a heap since winning the FFA Cup in November, must have some doubt about its capacity to defeat the Glory having been made to look second-rate at times on Sunday.

The game resembled two amateur FIFA video gamers going at each other in ultra-attacking mode.

Perth needed to win by four goals to jump City on the ladder and secure a home final.

City needed to win to go back above Brisbane into third and all but secure a qualification berth in to next year's Asian Champions League.

There is no way a sudden-death final will be played in the same way.

Then again, the three games between City and the Glory this season have produced a staggering 20 goals.

A different venue could also produce a different outcome.

City is 7-3-3 at AAMI Park this year, the Glory 2-6-5 away from nib.

However, Perth beat City 3-2 at AAMI in round three before the teams drew 3-all in round 12.

How much these factors play on the minds of the combatants remains to be seen.

Indeed, how much Sunday's goalfest - which tied the record for most goals in an A-League game - stays relevant this week is also another pertinent question.

If nothing else both attacks will fancy their chances of filling their boots as both defences can only be described as brittle.

Diego Castro scored a fifth minute penalty before Tim Cahill levelled the scores with his 10th goal of the season in the 21st.

Perth jumped to a 4-1 lead by the 75th minute via goals from Andy Keogh, Chris Harold and Nebo Marinkovic and all of a sudden the Glory looked capable of getting the four-goal win it needed.

But in chasing goals Perth was vulnerable at the back, a frailty that first Cahill and then Nicolas Colazo exploited to make it 4-3 before Adam Taggart and Nick Fitzgerald traded late goals.