Sunderland pocketed a total of £536,198 off the back of this summer's World Cup - thanks to a FIFA scheme designed to reward clubs.
Payments were made to clubs if current or former players featured at the tournament - and the final amounts have now been confirmed.
Of the 736 players at the tournament, two were registered with Sunderland at the time - Wahbi Khazri who played for Tunisia and Bryan Oviedo who represented Costa Rica.
Clubs were paid a fee of $8,530 (£6,565) for every day one of their players was at the tournament, starting two weeks before the opening match.
That means the Black Cats made more than £350,000 for Khazri and Oviedo's involvements - despite the fact both their nations were eliminated in the group stages.
Clubs also received a financial boost if players who were registered within a two-year period (dating back to July 2016) were in their nation's 23-man squad.
For that reason the Black Cats also benefited from Jordan Pickford, Sebastian Larsson and Sebastian Coates' being at the tournament.
Pickford was part of the England side which made it all the way to the semi-final of the competition, while Larsson and Coates both made it to the quarter-finals with Sweden and Uruguay respectively.
Clubs received a third of the fee for former players, based on how many days their countries remained in the competition.
In contrast to Sunderland's £536,198, North East neighbours Newcastle and Middlesbrough pocketed £96,766 and £194, 644 respectively from the scheme.
Manchester City earned the most money out of all the English clubs, taking £3.9million for their players' involvement.
Next came Tottenham, who took £3.4million, closely followed by Chelsea at £3million.