Ukraine's Vasyl Lomachenko retained his WBO world super-featherweight title as Guillermo Rigondeaux retired after the sixth round with a hand injury.
Cuban Rigondeaux is the fourth opponent in a row to retire against Lomachenko.
The much-anticipated bout at New York's Madison Square Garden was the first time two double Olympic champions have faced off.
All three judges had Rigondeaux, who moved up two weight divisions for the bout, behind when he retired.
"Maybe I should change my second name, now my name is 'No Mas Chenko," said Lomachenko, 29, who extended his record to 10-1.
Rigondeaux, who won Olympic gold at Sydney and Athens, holds the WBA super-bantamweight crown.
The 37-year-old, who was warned by the referee several times for foul play, began telling his trainer after the third round that his left hand and wrist hurt.
"This is not his weight so it's not a big win for me," added Lomachenko, who won gold medals at the Beijing and London Olympics.
Latest Stories
-
Joy FM Prayer Summit for Peace ends in electrifying worship and prayer
4 hours -
The Conscience of Leadership: A call to President Akufo-Addo on Ghana’s environmental devastation
4 hours -
Ghanaian youth unaware of their right to hold politicians accountable – Youth Bridge Foundation
5 hours -
Judge delays Trump sentencing for a third time
5 hours -
2024 WAFCON: Ghana drawn against defending champions South Africa in Group C
6 hours -
Photos from DW-JoyNews street debate on ‘galamsey’
6 hours -
Mimmy Yeboah: Blending heritage with global sophistication, confidence redefined through couture
7 hours -
100 Most Influential People Awards 2024: Brain Hill International School’s Director Mary Anane Awuku honoured
7 hours -
Akufo-Addo commissions 97-km Tema-Mpakadan railway line
7 hours -
Majority requests recall of Parliament
7 hours -
Kanzlsperger and Professor Quartey support WAFA with medical Donation
7 hours -
Gideon Boako donates 10 industrial sewing machines to Yamfo Technical Institute
8 hours -
‘Golden Boy’ Abdul Karim Razak honored at WAFU-B general assembly
8 hours -
Buipewura Jinapor secures Vice Presidential position in National House of Chiefs with record votes
8 hours -
2024 election: I want results to come out like ‘milk and honey’ – Toobu
8 hours