Longest current tenure in League One

Longest-serving managers in League One
Manager Days
Nigel Clough (Mansfield Town) 1976
Dave Challinor (Stockport County) 1615
Richie Wellens (Leyton Orient) 1488
Johnnie Jackson (AFC Wimbledon) 1420
Grant McCann (Doncaster Rovers) 1059
Graham Alexander (Bradford City) 881
Michael Skubala (Lincoln City) 874
Alex Revell (Stevenage) 718
Gary Bowyer (Burton Albion) 474
Steven Schumacher (Bolton Wanderers) 430
Conor Hourihane (Barnsley) 389
Tom Cleverley (Plymouth Argyle) 296
Brian Barry-Murphy (Cardiff City) 293
Michael Duff (Wycombe Wanderers) 199
Jack Wilshere (Luton Town) 174
Ian Evatt (Blackpool) 166
Leam Richardson (Reading) 159
Luke Williams (Peterborough United) 158
Jon Brady (Port Vale) 89
Liam Manning (Huddersfield Town) 75
Gary Caldwell (Wigan Athletic) 48
Matt Taylor (Exeter City) 33
Colin Calderwood (Northampton Town) 27
Lee Clark (Rotherham United) 18