Slovakia coach Jan Kozak is confident Napoli midfielder Marek Hamsik will shake off his form slump.
Hamsik has struggled for much of this season.
"There are times like this that are less good in football. Something similar happened with our captain Martin Skrtel last season [at Liverpool]," Kozak told Il Mattino.
"At Napoli there is a new Coach, there are some new players, and let's not forget that Marek has also had some physical problems.
"He is an absolute professional and is connected to Napoli, so I am sure he will overcome this period.
"He has already achieved so much success in the game, but he also has the potential to grow and improve.
"He has an excellent first touch of the ball, for example. He is 26 and has improved with the ball - his behaviour is professional and he is an example to follow."
