Muhammad Ali KOs Brian London This Day August 6, 1966 and retains the heavyweight crown
- Muhammad Ali 209½ lbs
- Brian London 201½ lbs
- KO at 1:40 in round 3 of 15
- Location: Earls Court Arena, Kensington, London, United Kingdom
- Referee: Harry Gibbs
- World Heavyweight Title (5th defense by Ali)
Ali was guaranteed $252,000 plus a percentage of the TV revenue. London made about $112,000.
Ali was a 15 to 1 betting favorite.
There was a crowd of about 13,000.
In the third round, Ali backed London into a corner and unleashed a flurry of punches that put him down for the count.
This was Ali’s last fight under his managerial contract with the Louisville Sponsoring Group. He chose not to renew the contract, and Herbert Muhammad became his manager.