Only victory would be enough to send Germany through after successive draws at the Games.
Group Group C Mineirao, Minas Gerais, Brazil
Key Stat: The four matches at the Games involving these sides have seen 24 goals scored - six goals per fixture on average.
Expert Verdict: Games involving Fiji have been very one-sided at the Games - although they took the lead against Mexico - and this match is unlikely to be any different. Germany's defensive issues are unlikely to be a problem here as Fiji will spend most of the match trying to keep the ball out of their own net. Plenty of goals seem inevitable, with Germany winning by a few clear goals to extend their stay at the tournament into the next round.
A pair of draws have not given Germany the ideal start to their Olympic Games campaign, but with the weakest team in the group up next they should still seal qualification for the next round here.
Gnabry continued his excellent tournament with a brace against South Korea last time out and he will keep his place as a result, with Brandt and Meyer also supporting striker Seike, with the Bender brothers continuing to shield a defence that has conceded five goals at the Games so far.
Horn, Toljan, Ginter, Klostermann, Sule, Bender, Bender, Brandt, Meyer, Gnabry, Seike.
Fiji were not expected to have much of an impact on the Olympics, but 8-0 and 5-1 defeats to South Korea and Mexico have been slightly embarrassing for the tiny island nation at the Games.
Changes could well be in the offing for this match with Fiji already out of the tournament, with Krishna likely to keep his place after scoring Fiji's only goal at the Olympics so far, giving his team the lead against Mexico last time out before the defending champions roared back with five goals.
Tamanisau, Dreloa, Singh, Hughes, Khem, Waranaivalu, Nabenia, Naidu, Baravilala, Turagabeci, Krishna.
History will be made in this match on Wednesday as Germany have never before played Fiji in a competitive football match.
Fiji will be hoping to keep the score down after conceding 13 goals in the finals already.
The formula for Germany is clear - win against Fiji and they go through to the next phase of the tournament, but draw or lose and they will join Fiji in heading home from Rio early.
Germany have found scoring goals relatively easy in Brazil - they have scored five goals in two games - but defensively they have been surprisingly weak, conceding the same number to ensure they have only taken two points from their two matches. However, Fiji are the worst team at the tournament and conceding eight to South Korea and five to Mexico suggests this really should be a very easy win for the German team.
Germany's price of 1/100 is a sign of how sure the bookmakers are that they will win this game, with outsiders Fiji offered at a gigantic price of 33/1. Even the draw is a big price, with odds of 20/1 offered on this outcome, so perhaps the goalscorer markets provide the most interest here.
Gnabry has scored in both games at the Olympics so far and he can be backed at 1/3 to score any time and a tempting 11/2 to get the first goal of the game.