Tony Bellew produced an explosive performance to land a stunning second stoppage win in 14 months over fellow Briton David Haye at London's O2 Arena.
Bellew, 35, looked at his best as he evaded a Haye attack in round three before landing a superb left hook and right hand to floor his heavyweight rival.
A second knockdown followed moments later and Bellew - the underdog with bookmakers, as he was in the previous fight - delivered a pinpoint left hand in the fifth to again send Haye down.
Haye nodded to acknowledge the shot and rose, only to be placed under intense attack, prompting referee Howard Foster to stop the fight and send Bellew racing to the corner of the ring in celebration.
Bellew looked overjoyed and close to tears as he surely ended a rivalry which had been a focal point in British boxing for more than 18 months.
Haye, 37, said before the fight that he needed a spectacular win to prolong his career, and it is seems unlikely that the former world heavyweight and cruiserweight champion will continue beyond this.
Have your say
More Sports Headlines
- Thomas Partey shortlisted for BBC African Footballer of the Year 2018
- 2018 AWCON: Ghana open campaign with win over Algeria
- Nigeria return to Africa Cup of Nations
- Uganda reach second straight Nations Cup
- AFCON 2019: Morocco and Mali qualify for Cameroon
- Photos: Prez Akufo-Addo surprises Black Stars in camp ahead of Ethiopia clash
- AWCON 2018: Four key players to watch
- U-17 WWC: Two straight wins for Ghana after hard-fought Finland victory
- Former 'Black Queens' players lead 2018 TOTAL AWCON Trophy tour in Accra
- Asante Kotoko policy analyst counts benefits of Soccerex exhibition
- Kenya loses CAS appeal over Women's Nations Cup exclusion
- Nigeria still AWCON favourites, but face tougher task than normal
- Black Queens begin quest for first AWCON title on Saturday
- VAR set to be used in Premier League next season
- Kwesi Appiah defends Ghana's big-name recalls