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Defending champions Germany confirmed their qualification for next year's World Cup in Russia by beating Northern Ireland 3-1 in Belfast.
Sebastian Rudy shot into the top corner in the second minute, Sandro Wagner rifled home from the edge of the area, and Joshua Kimmich drove in late on.
Josh Magennis headed Northern Ireland's goal in stoppage time.
Germany progress as group winners but Northern Ireland remain well placed to make November's play-offs.
Michael O'Neill's men complete their Group C campaign in Norway on Sunday, aiming to finish among the best eight of the nine group runners-up.
They will follow results elsewhere over the next two days but, as it stands, they may need a point in Oslo to make sure of reaching the play-offs, the draw for which takes place on 17 October.
Of the eight teams, the highest four in the Fifa rankings which will be published on 16 October - Northern Ireland are currently 20th - will be seeded for the play-offs.

Harry Kane scored deep into stoppage time to help England also claim their place at the World Cup with a 1-0 win against Slovenia in Group F.
The Three Lions were already going through with a draw with Kane's 94th-minute goal saved some blushes in front of a paltry crowd at Wembley.
Kyle Walker's low cross wasn't dealt with and Kane, quiet all night, prodded home his 14th goal in his last nine games for club and country.
The result leaves Gareth Southgate's men six points ahead of Scotland in second place with only one more qualifying game to play
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