Ruthless Sparta Prague put down a marker ahead of their Europa League clash with Rangers.
The Czech side made if four games without defeat, including a draw with Group A rivals Bronby, as they crushed struggling Zlin ahead of their showdown with Steven Gerrard 's men.
The home side did pile on the pressure on in the first half as they cancelled out the opener from defender Ondřej Čelůstka just before half time.
However, Sparta ran the show in the second half as they netted four more times, with talented teenager Adam Hlozek chipping in with two assists in the five star showing.
Tomas Poznar would net for the home side, but it only cut the margin to a 5-2 defeat.
It leaves them four points off the top of the table, but a point above neighbours Slavia.
If the Premiership champions need any more of a warning of the firepower possessed by their hosts on Thursday, they only need to ask rivals Celtic.
Sparta beat the Parkhead men both home and away last season with two 4-1 victories during Neil Lennon's tenure.
