Longest current tenure in League One

Longest-serving managers in League One
Manager Days
Nigel Clough (Mansfield Town) 1986
Dave Challinor (Stockport County) 1625
Richie Wellens (Leyton Orient) 1498
Johnnie Jackson (AFC Wimbledon) 1430
Grant McCann (Doncaster Rovers) 1069
Graham Alexander (Bradford City) 891
Michael Skubala (Lincoln City) 884
Alex Revell (Stevenage) 728
Gary Bowyer (Burton Albion) 484
Steven Schumacher (Bolton Wanderers) 440
Conor Hourihane (Barnsley) 399
Tom Cleverley (Plymouth Argyle) 306
Brian Barry-Murphy (Cardiff City) 303
Michael Duff (Wycombe Wanderers) 209
Jack Wilshere (Luton Town) 184
Ian Evatt (Blackpool) 176
Leam Richardson (Reading) 169
Luke Williams (Peterborough United) 168
Jon Brady (Port Vale) 99
Liam Manning (Huddersfield Town) 85
Gary Caldwell (Wigan Athletic) 58
Matt Taylor (Exeter City) 43
Colin Calderwood (Northampton Town) 37
Lee Clark (Rotherham United) 28