James Holland is the Socceroo due to spend the most time on the field in this season's elite UEFA competition, while Tom Rogic could come up against Lionel Messi
James Holland will soon embark on a steep learning curve as the Australian player most likely to see frequent game-time in the 2013-14 UEFA Champions League.
Holland's Austria Wien were on Thursday drawn in a challenging group with Liga Sagres champions Porto, Russian Premier League runners-up Zenit St Petersburg and La Liga's Atletico Madrid.
All three teams are regulars in European competition, while the Austrian Bundesliga title-winners will be making their debut in the group stages of UEFA's elite club tournament.
Porto reached the last 16 of the Champions League last season, and boast the likes of Jackson Martinez, Steven Defour, Lucho Gonzalez and Maicon among their ranks.
Zenit failed to get out of their group last year despite spending heavily, but will be able to call on Brazil star Hulk up front, as well as Axel Witsel, Danny and a host of Russia internationals in the campaign ahead.
Atleti meanwhile will be favourites to top the group after impressing greatly under coach Diego Simeone last season.
They have astutely replaced departed Colombian striker Radamel Falcao with World Cup-winner David Villa, and are the undisputed 'best of rest' in Spain, behind the behemoths of Real Madrid and Barcelona.
Going up against opponents of that calibre should prove to be a tremendous learning experience for Austria Wien regular Holland, who has flirted with breaking into the Socceroos first team.
He must seize this chance to rehabilitate his big-game reputation in Holger Oseick's thinking after underwhelming in the 2-2 World Cup qualifying draw at home to Oman in March, an unexpected result which threatened to derail Australia's hopes of reaching the tournament in Brazil next year, and a game in which Holland was particularly poor.
The other Australian in line to gain valuable exposure on the biggest stage is Tom Rogic, whose Scottish Premier League club Celtic will go up against storied European trio Barcelona, AC Milan and Ajax.
Rogic has struggled to break into the Celtic's first team early in the SPL campaign, but manager Neil Lennon may turn to the young playmaker when the priority shifts from physical to technical qualities for the mid-week games against Europe's elite.
Robbie Kruse faces even more of a struggle to get on the field in the Champions League, after finding himself behind South Korean Son Heung-Min in the pecking order at Bayer Leverkusen, who were drawn alongside Manchester United, Shakhtar Donetsk and Real Sociedad.
Mark Schwarzer has apparently been promised minutes by Chelsea manager Jose Mourinho, but they are unlikely to come in the Champions League until progression has been secured from a group containing Schalke, Basel and Steaua Bucuresti.
And the same applies to fellow custodian Mitch Langerak, who will likely be watching senior colleague Roman Weidenfeller from the bench as Borussia Dortmund go up against Arsenal, Marseille and Napoli.