The fast - rising Golub scored a stoppage victory in Round to improve to 9 - 0 , 7 KOs .
Mena saw Golub 's ledger dip to 20 - 3 .
The fast - rising Golub scored a stoppage victory in Round to improve to 9 - 0 , 7 KOs , while Mena saw his ledger dip to 20 - 3 .