Longest current tenure in League One

Longest-serving managers in League One
Manager Days
Nigel Clough (Mansfield Town) 1984
Dave Challinor (Stockport County) 1623
Richie Wellens (Leyton Orient) 1496
Johnnie Jackson (AFC Wimbledon) 1428
Grant McCann (Doncaster Rovers) 1067
Graham Alexander (Bradford City) 889
Michael Skubala (Lincoln City) 882
Alex Revell (Stevenage) 726
Gary Bowyer (Burton Albion) 482
Steven Schumacher (Bolton Wanderers) 438
Conor Hourihane (Barnsley) 397
Tom Cleverley (Plymouth Argyle) 304
Brian Barry-Murphy (Cardiff City) 301
Michael Duff (Wycombe Wanderers) 207
Jack Wilshere (Luton Town) 182
Ian Evatt (Blackpool) 174
Leam Richardson (Reading) 167
Luke Williams (Peterborough United) 166
Jon Brady (Port Vale) 97
Liam Manning (Huddersfield Town) 83
Gary Caldwell (Wigan Athletic) 56
Matt Taylor (Exeter City) 41
Colin Calderwood (Northampton Town) 35
Lee Clark (Rotherham United) 26