Jack Ross' men made it all the way to the final only to be denied silverware following a penalty shootout defeat to Portsmouth.
However, on the financial side of things, the tournament provided a healthy windfall.
Before a ball had even been kicked, £20,000 was transferred to Sunderland's accounts for their participation.
A group stage campaign consisting of wins over Carlisle United and Morecambe brought an income of £20,000 while a draw against Stoke City under-21s brought £5,000.
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Progression into the knockout stage saw the Black Cats earn £20,000 after beating Notts County while a 'Wear Tyne' derby victory over Newcastle youngsters fetched home £40,000.
Money increased to £50,000 after a quarter-final win over Manchester City under-21s set up a last four clash at Bristol Rovers.
And because Sunderland's semi-final at the Memorial Stadium was televised, £20,000 came their way as well as £50,000 for winning.
For the final, the Black Cats received £50,000 with winners Pompey collecting £100,000.
In total from prize money and TV money, Sunderland bagged £275,000 from the tournament - and that is excluding the 30% of the attendance revenue at Wembley they are entitled to.
That breakdown is not totally clear as of yet but Pompey and Sunderland can expect a substantial amount in recognition of 85,021 packing out the home of football.