The promising goalkeeper is facing a trip to the dentist on his return to Germany after making heavy contact with the woodwork on his first appearance in UEFA's elite competition
The Australians in Champions League action this week enjoyed mixed fortunes to say the least, with Mitch Langerak making his debut in the competition but chipping his two front teeth in the process.
Langerak came off the bench for Borussia Dortmund following the dismissal of Roman Weidenfeller for handling the ball outside the area away to Napoli on Wednesday.
Former Melbourne Victory custodian Langerak acquitted himself well at the Stadio San Paolo, but was unable to keep out Lorenzo Insigne's curling free-kick, colliding with the upright and damaging his winning smile, as last season's finalists went down 2-1.
The 25-year-old still put his team first, telling reporters "the match we lost hurts more than my teeth."
Elsewhere, James Holland's Austrian Wien were unfortunate to lose 1-0 at home to FC Porto in their first ever group-stage appearance.
Mark Schwarzer watched on from his familiar position on the Chelsea bench as Jose Mourinho's team suffered a shock 2-1 loss at home to Basel.
And Tom Rogic watched on from the subs' bench as Celtic went down 2-0 away to AC Milan.
On Tuesday, Robbie Kruse came off the bench for his first appearance in the competition, in the illustrious surrounds of Old Trafford, as Bayer Leverkusen went down 4-2 away to Manchester United.