Germany's leading coach, Joachim Low, said Leroy Sane was "lucky" after "evocative blood" on the Manchester City site and Milan Pavkov from Serbia was canceled to withdraw sides 1-1.
Sane moved from the park after sea in extra time at the end of the friendly atmosphere.
Serbia keeper Marko Dmitrovic had made an inspiring presentation to halt the modernization of Germany from gaining the 2019 open award.
"It was terrible," said Low. "Sane was lucky to get rid of injury, but such fragments can break bones."
Low's young side went to the head of Luka Jovic in the 12th minute, before delegates Leon Goretzka gave him the balance after breaking his head.
Germany was heavily involved in the early ownership but Jovic was available to turn the loose ball out of the six yards before Goretzka cut off the track in half.
Serbia was reduced to 10 men in late fall after Milan Pavkov showed red red for a careless late night at Leroy Sane in Manchester City.
World fans in 2014 will start their Euro 2020 campaign against Holland in Amsterdam on Sunday, March 24, and Serbia travel to Portugal on Monday.
A cause for hope in the new German era
Low made the extraordinary decision made earlier this month to change the national side of Germany to enjoy young people's experiences over the period.
Three Bayats Munich Mats Hummels, Jerome Boateng and Thomas Muller have been told that they are no longer needed, and Manuel Neuer is the only person to win the World Cup to start against Serbia.
Germany kept good ownership of Wolfsburg, although they were struggling to find many opportunities in half a century.
Their protective frames were open at the other end when they failed to clear their lines from the first set of visitors, as animated Jovic movement quickly came to change from near hand.
It may be that Serbia had been later before being more clinic ahead of a visit but Lukas Klostermann's last ditch prevented Jovic from delaying his attendance.
However, Marco Reus left on the bench and Germany began to rely on the defense of Serbia which had looked so hard for 45 minutes.
Leroy Sane started lifting the ball in the place because Reus grew on the match, and Goretzka struck a striking balance with the tough efforts of a young Lowland team.
Germany's young taxes may not be challenging to the future international dignity in particular in Reus and Ilkay Gundogan, Low has enough models to develop his team fast.
The German leader was happy with his young side. He said: "First of all this new team didn't work automatically for the first time, working together for the first time, working well.
“In the second half the team gave a good indication of weight and we can increase the temperature. We had many opportunities and lost the last version. That is also part of the learning process.
"Overall, I am delighted with the mind, the weight we created."