Soccer boot torn in tumble (8)
I believe the answer is:
football
'soccer' is the definition.
(I've seen this before)
'boot torn in tumble' is the wordplay.
'torn' indicates an anagram.
'in' indicates putting letters inside.
'tumble' becomes 'fall' (synonyms).
'boot' with letters rearranged gives 'ootb'.
'ootb' inserted inside 'fall' is 'FOOTBALL'.
(Other definitions for football that I've seen before include "Team sport" , "The beautiful game, some say" , "Strange ballot of the game" , "Lob aloft poorly for this game" , "Gambling on soccer results" .)