Mark Atkinson has urged his players to find their ruthless nature as quickly as possible following their late defeat to Wolverhampton Wanderers in the Premier League.
A lack of finishing cost Sunderland under-18s again on Saturday, this time at the hands of Wolves who secured all-three points on Saturday.
The Black Cats began the game in the ascendancy, Lee Connelly going close to scoring three times in the opening 20 minutes.
Oscar Krusnell then blazed over from five yards before fellow full-back Owen Gamble saw his mazy dribble come to nothing as keeper Rory Brown kept his attempt out.
Then, with time all but up, Wolves’ topscorer Jordan Allan netted his 14th of the season in only his 18th appearance, slotting home from close range.
Speaking post-match, Atkinson was left deflated after his side fell afoul of the same knockout blow dealt by Newcastle United a week earlier.
"It was so frustrating because after all our dominance it was almost unbelievable that we had lost in the same manner as we suffered last week,” he said.
“It was the same against Newcastle but there comes a time when we must learn to take our chances.
“We have been made to pay for the second time in seven days - if you don't take your chances this can always happen.”