Mark Duffy History
| Clubs | Country | Position | NO | From | To | Loan |
|---|---|---|---|---|---|---|
 Morecambe | England | Midfielder | 18 | 01/02/2009 | 20/01/2011 | |
 Scunthorpe United | England | Midfielder | 20/01/2011 | 14/07/2013 | ||
 Doncaster Rovers | England | Midfielder | 14/07/2013 | 01/07/2014 | ||
 Birmingham City | England | Midfielder | 7 | 01/07/2014 | 01/06/2016 | |
 Chesterfield | England | Midfielder | 02/02/2015 | 02/03/2015 | Y | |
Burton Albion | England | Midfielder | 03/07/2015 | 09/05/2016 | Y | |
 Sheffield United | England | Midfielder | 01/06/2016 | 01/08/2020 | ||
 Stoke City | England | Midfielder | 08/08/2019 | 30/01/2020 | Y | |
ADO Den Haag | Netherlands | Midfielder | 31/01/2020 | 31/05/2020 | Y | |
Fleetwood Town | England | Midfielder | 01/08/2020 | 30/06/2021 | ||
 Tranmere Rovers | England | Midfielder | 31/08/2021 | 07/01/2022 |
NO = Player number .