Leicester piled the misery on David Moyes and pushed Sunderland closer to relegation from the Premier League with a gritty 2-0 win.
Islam Slimani and Jamie Vardy scored to virtually guarantee the champions' own survival and cap a few days to forget for Black Cats boss Moyes.
The Scot's comments to a BBC reporter had left him facing a Football Association charge but he is also now staring at relegation with the Wearside club.
Efficient but not effective, the visitors battled hard but the result leaves them bottom -- eight points from safety with eight games left.