Ikonomidis equalised within 20 seconds of taking the field at Coopers Stadium in the 1-1 result on Friday night.
The Bulls attacker slid in to score in the 57th minute, equalising after Reds midfielder Jonny Yull's 37th minute goal.
Assist of the season?! This cheeky backheel is FILTHY 😮�💨— Isuzu UTE A-League (@aleaguemen) January 30, 2026Ryan Kitto sets up Jonny Yull's opener with a magical bit of skill. Class from @AdelaideUnited 🙌📺 Watch #ADLvMAC live on Paramount+ pic.twitter.com/10MamruRWl
Third-placed Macarthur (24 points) remain one point above Adelaide in fourth spot.
Yull produced a sweetly driven low strike after superb lead-up by Adelaide's veterans Craig Goodwin and Ryan Kitto in a fixture pushed back by 30 minutes because of extreme heat in Adelaide.
Both sides made hot starts, sharing eight shots on goal in the initial 20 minutes - Adelaide's Yaya Dukuly came closest in that spell, hitting the cross-bar from long range in the 12th minute.
Reds striker Luka Jovanovic also had two great chances, including failing to beat a charging Bulls goalkeeper Filip Kurto when one-on-one.
But after a drinks break midway through the opening half, Adelaide amped up the pressure on the visitors and were rewarded by Yull.
Captain Goodwin took possession along the left flank and passed to Kitto, who delivered the neatest of back-heels into the path of Yull.
The 20-year-old launched from the edge of the box and beat a diving Kurto for his third goal this season.
Adelaide held the lead until Bulls coach Mile Sterjovski sent Ikonomidis into the fray on 57 minutes - and seconds later, the 30-year-old levelled scores.
Bulls winger Luke Vickery tore along the right-side and into the Reds' danger zone, powering a low ball across the face of goal which a sliding Ikonomidis met at the far post to score with his first touch of the game.
In a frantic finish as both sides pressed for a winner, Ikonomidis had another chance in the 88th minute but, with time and space, couldn't muster the power on his left boot to beat Adelaide 'keeper Josh Smits.
And five minutes later, Reds substitute Joey Garuccio burnt a gilt-edged chance when just failing to get a touch on an insightful Amlani Tatu through-ball.
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