Three players who've featured for both sides in profile.
Dickson Etuhu joined Sunderland from Norwich in July 2007 and spent just over a year on Wearside.
The Nigerian midfielder began his career at Manchester City but it was with Preston North End where he really came to prominence.
He featured in 150 games for the Lancashire outfit and played a key role in the club’s run to the Division One play-off final in 2004-05.
Having previously had a loan spell at Norwich, Etuhu moved to Carrow Road on a permanent basis in January 2006 for a fee of £450,000.
Roy Keane brought the combative midfielder to the Stadium of Light in July 2007 as he prepared for life in the top flight.
After making his debut in the season-opening 1-0 win over Spurs, Etuhu made a further 20 appearances during the 2007-08 season, scoring his only goal in a 2-0 victory over Wigan in February 2008 (pictured).
He later moved on to Fulham and current club Blackburn and has passed the career mark of 400 appearances.
Keith had spells with both Sunderland and Norwich in the Eighties during a long playing career.
The striker began his career at Barnet and later played for Ipswich and Birmingham prior to moving to Carrow Road in 1981.
He made 114 league appearances for the Canaries, scoring 29 goals, and also had a loan spell with US side Jacksonville Tea Men whilst with the Norfolk club.
After hitting 29 goals in 88 league appearances for Stoke, Bertschin moved north to Roker Park, debuting against Portsmouth in March 1987.
A total of 43 appearances in red and white yielded 10 goals, with the frontman later representing Walsall, Chester and a number of non-league clubs.
He then moved into coaching and later returned to Wearside as Sunderland’s reserve team manager under Steve Bruce. He is currently working alongside Bruce at Hull City.
Defender Turner is in his second season in yellow and green having joined the Canaries from Sunderland ahead of the 2012-13 campaign.
The big centre-back burst onto the scene at Brentford having originally been an apprentice at Charlton, during which time he had a loan spell at Leyton Orient before joining the Bees.
Turner’s form at Griffin Park soon saw him move up the league ladder, with a switch to Hull City completed in summer 2006.
The defender was voted the Tigers’ Player of the Season as the club won promotion to the Barclays Premier League in 2007-08, and went on to play every minute of the following campaign.
Only Sylvain Distin of Portsmouth matched that feat.
Steve Bruce made Turner one of his first signings at the Stadium of Light in August 2009 and the defender was a regular fixture in 2009-10, playing 36 games.
Turner’s 2010-11 season was disrupted by injuries and he made just 16 appearances – a tally which increased to 29 in 2011-12.
He then moved on to Carrow Road, where he is closing in on 50 appearances. The defender hasn’t featured since New Year’s Day due to injury, though he made a comeback with City’s U21 side in midweek.