I really love when the girls decide to box topless against the guys they box against...
Although Cali didn't remove her bikini top until she knocked out Duncan that other guy she sparred with before she fought Darius...
Cali probably was as confident as she could be after KO'ing Duncan that she figured she could easily beat Darius too so she decided she'd box topless which she thought would humiliate Darius even more if he got beat by a topless female opponent...