Sydney FC were the last A-League club to go through the mandatory filming process for Fox Sports' virtual graphics and it is understood Gameiro was one of the final players to be filmed, compounding the club's frustration over the nature of the accident. It is the second time Sydney FC have had a player suffer an injury during filming for advertisements after former marquee player John Aloisi suffered a foot injury during a promotional shoot before the 2008-09 season.

The sudden injury to Gameiro, and Yau's absence, opens the door for Joel Chianese to start in the three-man forward line against the Jets. Farina has not selected his starting line-up for Friday's match but Chianese said he is in the peak condition of his career and is ready to start if called upon.

''It's just an unfortunate injury [for Gameiro], one of those things that you don't expect to happen,'' Chianese said. ''I'm feeling good, probably feeling the best I ever [have]. I'm injury free - touch wood that it stays like that.''

Competition for starting spots in Sydney's forward line is already strong with six attackers on the roster at the club. Chianese, 23, understands the uncertainty over selection but said the fight for places will bring out the best in the club's performances in front of goal this season.

''It's tough but at the same time it makes you work hard to keep your spot,'' he said. ''Once you do get your opportunity, you have to do what you can to keep it because, if you lose it, you might be out for a long time because we have quality players all around the field.''