With two wins from two games respectively, both sides have been in resurgent form in recent weeks and will aim to maintain their decent run of results.
Perth Glory ended their six-game winless run when they grabbed a hard-earned 2-1 win at home against fellow strugglers Melbourne Victory.
The Glory were able to build on that performance, claiming successive wins for the first time since February when they beat Western United 3-0 last time out.
Fornaroli and Ikonomidis continued their fine form by scoring to give the Glory a two-goal lead going into the break before Joel Chianese completed the rout in the 77th minute.
While Perth Glory remain in 10th place in the A-League table, they are now 10 points clear of 11th-placed Melbourne Victory and six points behind Brisbane Roar in the final playoff spot.
They will feel confident in their chances of moving up the table in the coming weeks as they have a game in hand over most of their rivals.
Meanwhile, Western Sydney Wanderers kept their chances of making the playoffs alive when they claimed an emphatic 5-0 win over Western United last Saturday.
Prior to that, the Wanderers beat fourth-placed Sydney FC 3-2 at the Bankwest Stadium to bring an end to their six-game winless run.
Carl Robinson's side have now climbed up to seventh place in the log, level on points with Brisbane Roar, who have one game in hand.
Western Sydney Wanderers will now aim to move into the playoff places this Sunday by grabbing a league double over the hosts, after they cruised to a comfortable 3-0 win back in March's reverse fixture.
Besides defender Sebastian Langkamp, who is sidelined with a groin injury, Perth Glory have a clean bill of health heading into Sunday's game.
With 10 goals to his name so far, Bruno Fornaroli has been a standout performer for the hosts and we expect the 33-year-old to once again lead their attack.
Goalkeeper Vedran Janjetovic remains a doubt for the hosts, having missed last week's game against Western United through to a shoulder injury.
In the absence of any other late fitness issues, Robinson has the luxury of a fully fit squad with no suspension concerns at his disposal.
Perth Glory possible starting lineup:
Reddy; Lachman, Aspropotamitis, Ota; Armiento, Bodnar, Timmins, Ikonomidis; Bramwell, Castro, Fornaroli
Western Sydney Wanderers possible starting lineup:
Margush; Gordon, McGowan, Mourdoukoutas; Russell, Baccus, Dorrans, Aquilina; Ibini-Isei, Yeboah, Cox
We say: Perth Glory 1-1 Western Sydney Wanderers
With both sides heading into this game in similar form, we can expect a cagey affair in this tie. The two squads are also evenly matched on paper and so we fancy a share of the spoils with each team scoring one goal apiece.