Hungary, Serbia, Germany, USA. USA lead early but all four boats still within a length at 750m. Three boats go through to semifinals. All crews throwing everything in through half way. Germany pull ahead of the USA and sneak a length at 1500m. USA and Serbia level for 2nd and 3rd with Hungary slipping back. Germany making a statement by pulling well clear. Half a length clear and pulling away. Leave nothing to chance in the rep after crabs in the quad races. USA hit buoys in 250m and drop a few metres. USA rowing over the buoys but just reach the line ahead of Hungary. Germany first, Serbia second, USA third. These will qualify. Hungary got so close but go out.