Of the 10 players who we’ve selected - who have played for or represented both Sunderland and Sheffield United 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: Neil Collins, Jody Craddock, Brian Deane, Colin Grainger, Alan Quinn, Andy Reid, Peter Boyle, Keith Waugh and Alfred Common, to name but a few.
Also, do you have any memories of players who have turned out for both clubs, please share.