All the Young Socceroos matches at FIFA U-20 World Cup Turkey 2013, plus the semi-finals and final, will be LIVE on SBS TV and streamed online on TWG.
Antonis suffered the injury in the first half of Monday’s international against the Junior All Whites in Wollongong - won 5-0 by the Young Socceroos.
Scans on Tuesday morning confirmed the severity of the injury, which will keep Antonis sidelined for five to six weeks.
Under competition rules, Young Socceroos coach Paul Okon has replaced Antonis with Sydney FC midfielder Hagi Gligor.
"Unfortunately this injury has ruled Terry out of the squad, which is very disappointing for him and the team as he is a very important player and this would have been his second FIFA U-20 World Cup," Okon said. "We all wish Terry a quick recovery and hope to see him back in training soon.
"I’m confident that Hagi Gligor can step straight into the squad and help us with our campaign."
The Young Socceroos depart for Turkey for a pre-tournament training camp in Antalya where they will play Chile’s U-20 side on Sunday 16 June before beginning their 2013 FIFA U-20 World Cup campaign against Colombia in Trabzon on Saturday 22 June (Sunday 23 June - Kick-off 1am AEST).