West Bromwich Albion midfielder Grzegorz Krychowiak got Poland back in the game with an 86th-minute header but Senegal hung on at Moscow’s Spartak Stadium.
In a match billed as a straight fight between super-strikers Robert Lewandowski and Sadio Mane neither scored but Liverpool striker Mane set up Idrissa Gueye for the shot that took a wicked deflection off Cionek, leaving Szczesny totally wrong-footed in the Polish goal for Senegal’s opener on 37 minutes.
The West Africans doubled their lead on the 60-minute mark when the experienced Juventus goal-keeper had a moment to forget.
Krychowiak put Poland in trouble with a woeful bouncing back pass, but Szczesny opted rashly to charge out of his penalty area.
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