A purported screenshot from a football (i.e. soccer) match televised by ESPN, in which the country code for Niger and Germany combine to spell out a notorious racial pejorative, was circulated on the Internet during the 2010 FIFA World Cup and again during the 2014 FIFA World Cup:
Although this image is sometimes said to represent a match between Nigeria and Germany, the flag displayed on the left-hand side and the country code NIG both represent the country of Niger, not Nigeria. The screenshot itself is clearly not a real depiction of a televised match between those two countries' national teams, because not only did Germany not play a match against Niger during the 2010 FIFA World Cup, but not once in the last 100+ years has the German national team played a match against the national team from Niger.
The image displayed here appears to be screen capture from EA Sports' 2010 FIFA World Cup South Africa video game, which displays an identical scoreboard style:
In the unlikely event of these two teams' meeting each other in a World Cup match, most likely the order of display for the two nations' country codes would be reversed (i.e., to spell out GER NIG rather than a common racial pejorative).
In 2016, the German news outlet TAG24 reported that a video graphic used during a ZDF network broadcast of an Olympic soccer game between Nigeria and Germany abbreviated the country names as "NIG-GER."