Willem II striker Kwasi Okyere Wriedt took his goal tally in pre-season to six after scoring in Saturday's 2-0 win over Excelsior.
Wriedt scored the victory confirmation goal against their opponents, a Dutch second-tier side.
He had the easiest task of tucking home from close range after the Rotterdammers failed to deal with a corner.
Mats Kohlert gave Willem II the opener in the 41st minute.
The former Bayern Munich II goal poacher is ready to play in his second season.
Willem II open their Dutch Eredivisie campaign on 15 August 2021 at home against Feyenoord.