Team covering left edge (5)
I believe the answer is:
sidle
'edge' is the definition.
(I've seen this before)
'team covering left' is the wordplay.
'team' becomes 'side' (both can mean a sports team).
'covering' indicates putting letters inside.
'left' becomes 'l' (common abbreviation).
'side' going around 'l' is 'SIDLE'.
(Other definitions for sidle that I've seen before include "Walk crabwise" , "Move in furtive manner, edge along" , "Move like a crab" , "Walk sideways in furtive manner" , "Slink, creep, sneak" .)