Longest current tenure in League One

Longest-serving managers in League One
Manager Days
Nigel Clough (Mansfield Town) 1975
Dave Challinor (Stockport County) 1614
Richie Wellens (Leyton Orient) 1487
Johnnie Jackson (AFC Wimbledon) 1419
Grant McCann (Doncaster Rovers) 1058
Graham Alexander (Bradford City) 880
Michael Skubala (Lincoln City) 873
Alex Revell (Stevenage) 717
Gary Bowyer (Burton Albion) 473
Steven Schumacher (Bolton Wanderers) 429
Conor Hourihane (Barnsley) 388
Tom Cleverley (Plymouth Argyle) 295
Brian Barry-Murphy (Cardiff City) 292
Michael Duff (Wycombe Wanderers) 198
Jack Wilshere (Luton Town) 173
Ian Evatt (Blackpool) 165
Leam Richardson (Reading) 158
Luke Williams (Peterborough United) 157
Jon Brady (Port Vale) 88
Liam Manning (Huddersfield Town) 74
Gary Caldwell (Wigan Athletic) 47
Matt Taylor (Exeter City) 32
Colin Calderwood (Northampton Town) 26
Lee Clark (Rotherham United) 17