What a line-up we have for you in today’s vote.
Of the 10 players that we’ve selected - who have played for or represented both Sunderland and Middlesbrough over the years - who is your favourite?
Cast your vote now! (top right of player profile)
Some good, some bad, but some did make an impact on Wearside.
Other names to have links with both clubs are: Bolo Zenden, Stan Cummins, Justin Hoyte, David Hodgson, Graham Kavanagh, John Kay, Grant Leadbitter, Mark Proctor, Dickie Rooks, David Hodgson, Joe Bolton, Geoffrey Butler, Colin Cooper, George Kinnell, James Watson and Johnny Crossan, to name but a few.
Also, do you have any memories of players who have turned out for both clubs, please share.