Poland kept huffing and puffing and they and Krychowiak gained some consolation when he planted a firm header past Ndiaye with four minutes to play.
Senegal who are making only their second World Cup appearance now lead the group ahead of Japan, who beat Colombia 1-0 earlier on Tuesday. Both the teams have suffered a long wait to qualify for a World Cup tournament as Poland played last at 2006 World Cup, while Senegal played in 2002 World Cup, which was the only World Cup tournament in which it qualified.
Poland square-off against Senegal at Spartak Stadium, Moscow, Russia. Senegal would later go on to score the result clinching goal.
Senegal punish Polish mistake for Africa's first win at the 2018 Fifa World Cup finals. Constantly caused problems for Poland with his smart and astute passing forward, and was involved in much of what was good about the Lions' play. Even at two down, Adam Nawałka's side lacked any urgency to get back into the contest.More news: Woman shouting 'Allahu akbar' injures two with blade in France
This will be the first ever encounter between Poland and Senegal. Working the channels well and leading Senegal's high-pressing game, the Liverpool forward was a key component of Aliou Cissé's gameplan.
Midfielders: Jakub Blaszczykowski, Jacek Goralski, Maciej Rybus, Piotr Zielinski, Karol Linetty, Grzegorz Krychowiak, Kamil Grosicki, Slawomir Peszko, and Rafal Kurzawa. Subs: Bednarek 5, Kownacki 5, Bereszynsk N/A.
Senegal: Khadim N'Diaye, Wague, Sane, Koulibaly, Sabaly, Sarr, Alfred N'Diaye, Gueye, Niang, Mane, Diouf.
His decision to start without Cheikhou Kouyate raised eyebrows, but Alfred N'Diaye ultimately forged a strong and mobile midfield partnership with Idrissa Gueye.More news: Barty faces Konta in Nottingham final
Nawalka sent on Southampton defender Jan Bednarek at half-time - Jakub Blaszczykowski making way on his 100th global appearance - as Cionek's own goal ensured Poland's 32-year wait for a clean sheet at the World Cup goes on. He tries to pass the ball back to Szczesny from near enough the half-way line but he doesn't get enough on it!
The Southampton defender did not see the Senegalese poacher until it was too late and he then poked the ball past Szczesny's late-arriving cavalry and walked the ball into the net. This made it very hard for Poland to find a way through the middle. Piszczek drills a low cross from the right to Milik but his first-time effort at the near post fails to find the target.
Grzegorz Krychowiak pulled a goal back for Poland on 86 minutes which was just a consolation goal. It's gone to VAR, was it offside? No!More news: Manchester United set record breaking price for Martial