Tomi Juric is in doubt for Caltex Socceroos duty after he limped off early in FC Luzern's draw with Young Boys, while Mitch Langerak is in top form in Germany.
Juric lasted just seven minutes in the Swiss Super League on Sunday before being forced off with suspected knee ligament damage.
The Australian striker will have a scan on Monday.
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Luzern went on to register a 2-2 draw with Young Boys.
The Caltex Socceroos face Thailand in their next World Cup qualifier on November 15 in Bangkok.
In the 2. Bundesliga, Langerak's Stuttgart made it three straight wins as they chase promotion with the Caltex Socceroos goalkeeper playing 90 minutes in a 3-1 triumph over Arminia Bielefeld.
Stuttgart are just a point behind leaders Eintracht Braunschweig in the standings, with Ben Halloran's Heidenheim another three points back in third.
Elsewhere in Europe, Scott Jamieson was a 68th-minute substitute as IFK Gothenburg lost 3-1 at Norrkoping in the Allsvenskan.
Andy Rose continued his strong comeback from injury with a full shift in Coventry City's 1-1 draw at Morecambe in the FA Cup.
Meanwhile in South Korea, Tomislav Mrcela finished the K League season with a draw as Jeonnam Dragons were held 1-1 by visiting Ulsan.