As around 10 were arrested in violent clashes with police in 20, at least one England enthusiast has been injured.
England supporters hurled bottleswhile police in riot gear returned fire.
A pool of blood was left to the road.
He was spotted getting treatment in the rear of a crane, while one was awakened by one right into a police van with hands behind their backs.
Authorities were not able to confirm how many arrests are made.
The scenes faded before 7pm local time after a day of drinking for supporters that had descended on the city ahead of their groups European Qualifier from the Czech Republic.
Hundreds of fans took over a small square at the Old Town of the city, chanting and singing.
There had been trouble, together with police participation limited to telling enthusiasts to remove flags until night dropped.
However, as bottles were pelted in officers, a recorded warning was performed in English caution them toobey the law and face coverings and pyrotechnics are illegal.
As missiles continued to be thrown, czech police then advanced, firing stun grenades as English lovers were forced back by a small archway.
About 10 men were pinned into a corner and forced to lie face down, while another was seen being held on the floor nearby as officials secured the scene.
England fans bought tickets for Friday nights clash, although more are believed to have travelled.
The late kick-off time of 8.45pm and the citys party reputation led to fears of a repeat of foul scenes observed on recent trips to Amsterdam, Dortmund and Porto.
The fixture also coincided with a national day of mourning for the countrys most renowned singer and travelling fans are told to be respectful of mourners.
Ahead of the game, the Football Association requested supporters toreport that fool when they view anti-social behaviour, whilst police urged those moving to the game to notembarrass themselves.
Deputy chief constable Mark Roberts, the National Police Chiefs Councils football policing guide, said:Pragues a beautiful city. Go, enjoy it, it is an absolutely amazing place. Weve got a staff thats worth observing and supporting so theres plenty of things to proceed and enjoy.
Just dont embarrass yourself or anyone else by drinking to excess and behaving in ways where you will wind up on film or print the following day.
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