Laredo's rigged trials (7)
I believe the answer is:
ordeals
'trials' is the definition.
(I know this)
'laredo's rigged' is the wordplay.
'rigged' is an anagram indicator.
'laredos' is an anagram of 'ORDEALS'.
(Other definitions for ordeals that I've seen before include "difficult tests" , "Difficult experiences, hard times" , "Trying experiences" , "Tribulations" , "Testing experiences" .)