Eldin Jakupovic's late penalty save handed Hull another boost in their Premier League survival fight but also condemned Sunderland to relegation.
Hull pulled off a gritty goalless draw at Southampton, with Jakupovic palming away Dusan Tadic's late spot kick as the visitors held out for a potentially priceless point.
Hull's point, coupled with Sunderland's 1-0 home loss to Bournemouth, ensured Marco Silva's men edged closer to top-flight safety - and cemented the Black Cats' slip through the trap door.
Just as a low-quality affair at St Mary's appeared to be petering out to a dull finish, Alfred N'Diaye hauled down Maya Yoshida in the box.