Forcefully appearing in my eleventh game (10)
I believe the answer is:
vehemently
'forcefully' is the definition.
(thesaurus)
'my eleventh game' is the wordplay.
'game' is an anagram indicator (solving anagrams is a game).
'my'+'eleventh'='myeleventh'
'myeleventh' is an anagram of 'VEHEMENTLY'.
'appearing in' acts as a link.
(Other definitions for vehemently that I've seen before include "with force" , "Intensely, forcefully" , "Passionately, forcefully" , "with strong feeling" .)