Sunderland earned a historic Europa League spot after a resounding 6-0 win over Chelsea, who were reduced to 10 men following a red card for Wesley Fofana.
Trai Hume opened the scoring for Sunderland, before Malo Gusto's own goal and a series of Chelsea mistakes left the visitors with a mountain to climb.
Chelsea's woes were compounded when Fofana was given his marching orders, leaving them with a numerical disadvantage.
The result marks a significant triumph for Sunderland, who have earned a spot in European competition for the first time in several seasons.
The victory also brings an end to Chelsea's hopes of finishing in the top four, and leaves them facing a nervy finish to the season.
Sunderland manager Tony Mowbray was jubilant after the win, saying: 'This is a huge result for the club, and I'm delighted for the players and staff who have worked tirelessly to achieve this.