With the win , Tso improved his record to 21 - 0 .
Tso battered Mukai and dropped him twice before finishing him with a left to the body in the 8th round .
With the win , Tso improved Mukai 's record to 21 - 0 .
Tso battered Mukai and dropped him twice before finishing him with a left to the body in the 8th round .