Japan's campaign to secure a place in the Rio 2016 men's volleyball field is all but over after the team lost its third straight game, this time to Iran, on Wednesday.

Japan's four-set loss means it now has a one-win, three-loss record while Iran, which is best placed to take the one automatic Asian qualification spot, is 3-1 with three matches remaining.

Poland had earlier mounted its second two-set comeback of the tournament at Tokyo Metropolitan Gymnasium, defeating China to remain unbeaten and move one step closer to a place in Rio.