A sold-out crowd watches the 2018 final in Szczecin.

A sold-out crowd watches the 2018 final in Szczecin.

Team "Polish Power" Mariusz Fyrstenberg (left) and Marcin Matkowski (right) were finalists at the 2011 Nitto ATP Finals.

Richard Gasquet moves to 9-1 in Challenger finals, defeating Florian Mayer for the Pekao Szczecin Open title.

Jurgen Zopp claims his first ATP Challenger Tour title in three years, prevailing in Alphen, Netherlands.

Jürgen Zopp attempts a backhand at the ATP Challenger Szczecin in Poland.

Jürgen Zopp attempts a backhand at the ATP Challenger Szczecin in Poland.

The Pekao Szczecin Open is celebrating its 25th anniversary on the ATP Challenger Tour, having won Tournament of the Year honours in 2016.

The awards for 2016 ATP Challenger Tournaments of the Year are presented in Braunschweig, Germany.

Alessandro Giannessi takes his maiden ATP Challenger Tour title in Szczecin, Poland.