All-in wrestling with bear: one’s up on points? (9)
I believe the answer is:
ballerina
'one's up on points?' is the definition.
(as in 'en pointe', on tip toes in ballet shoes)
'all-in wrestling with bear' is the wordplay.
'wrestling with' is an anagram indicator.
'all'+'in'='allin'
'allin' mixed up with 'bear' makes 'BALLERINA'.
(Other definitions for ballerina that I've seen before include "Female dancer, could be prima" , "girl from the Kirov?" , "She dances to a rain bell" , "Danseuse" , "agile performer" .)