Error made by fielder (4)
I believe the answer is:
slip
I believe this is a double definition.
'error' is the first definition.
(slip is a kind of error)
'fielder' is the second definition.
(slip is a cricket fielding position)
'made by' is the link.
(Other definitions for slip that I've seen before include "Lingerie item - fielding position" , "Nod" , "Sole lapse" , "Drop" , "potter has to cover?" .)