كتب : وكالات
Ittihad Jeddah defender Redha Taker scored Saudi Arabia's only goal in the 27th minute after heading a free-kick home.
But a brace from Polish star Lukasz Sosin secured the victory for the visitors.
Saudi Arabia plays in World Cup Group H alongside Spain, Ukraine and Tunisia while Poland were drawn with host Germany, Costa Rica and Ecuador in Group A.
The tournament starts on June 9th and finishes in 30 days.