Arsenal's third place finish in the English football Premiership is in jeopardy after their 2-1 loss at Blackburn Rovers.
Blackburn came from behind for the home win over Arsenal, so third place in the Premier League could be decided on the final day.
David Dunn cancelled out Robin van Persie's opener before Christopher Samba scored the winner for the All Whites skipper Ryan Nelsen's side.
A win for Arsenal would have confirmed third and direct qualification for the Champions League group stage.
But Tottenham can now move to two points behind them if they win at Manchester City on Thursday, meaning Spurs could pinch third if they win and Arsenal lose in the final round of matches.
The win moves Blackburn to 10th ahead of Fulham, Sunderland and Stoke.
Earlie Hull's relegation was confirmed when they conceded a late goal at Wigan Athletic and drew 2-2.