Gary Russell retained his WBC featherweight title after a battle against Tugstsogt Nyambayar on Saturday.
Russell was awarded a unanimous-decision victory in Pennsylvania to successfully defend his title for the fifth time.
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Judges scored the fight 118-110, 117-111 and 116-112 in the American's favour as he improved his record to 31-1.
Nyambayar, 27, suffered the first loss of his professional career after 11 consecutive wins.
Guillermo Rigondeaux secured the WBA bantamweight title courtesy of a split-decision win against Liborio Solis.
Rigondeaux knocked Solis down in the seventh round and two judges awarded him the bout (116-111 and 115-112), while another saw it the Venezuelan's way 115-112.
