We profile latest first-team call-up.
Cramlington-born defender Liam Marrs has been with the Black Cats since he was 12 years old.
Marrs has been in fine form for Kevin Ball’s development squad since becoming captain at the start of the 2012-13 season.
Liam joined the club's development squad as a professional ahead of the 2011-12 season and started a team-high 19 games, adding a further three appearances as a substitute.
And he’s been ever-present this campaign, featuring in every game for the under-21’s since December and becoming a fine leader for youngsters coming into Ball’s squad.
Liam has been handed squad number 29.