With some players, there's always a moment in their career that, years into the future, you can look back on as a beacon of when they announced themselves.
Neither, you suspect, will Chelsea wonder kid Estêvão.
The 19-year-old probably had the best view of anyone, lying at the base of the four-man wall looking back towards Hugo Souza.
Whatever he was thinking, Irankunda was already flipping towards the corner flag.
"I mean, good goal, good goal," he told Channel 10, the confidence of youth oozing from his voice as he was asked about his free kick.
Estêvão already had first-hand experience of Irankunda's slipperiness: on the half hour mark the Sporting forward showed balance to turn the Chelsea man and then exploded with power to dance away up field.
"There were some big stars out tonight," Irankunda said on Channel 10, marvelling at the crowds that had come out to support both Australia and Brazil.
Having made the move to Portuguese giants Sporting from Watford in the off-season, Irankunda has not had time to make his mark yet.
Yengi played his part centrally as a willing runner and constant risk to an inexperienced Brazilian back four, while the Seleção's pitiful midfield was readily overrun by fullbacks Jacob Italiano and Aziz Behich, with Paul Okon-Engstler's driving runs from midfield the factor in winning the free kick that Irankunda placed into the net.
A quiet night may have those who were singing Irankunda's praises on Friday bemoaning a lack of consistency by Tuesday.