Ken Buchanan has eight losses against eight opponents on his boxing record. For a list of Buchanan's best fights, refer to "Best fights of Ken Buchanan".
On January 25, 1982 Ken Buchanan faced off against George Feeney at age 36. He was coming in with a record of 61-8 (26). Buchanan lost the fight via 8-round points decision.
On November 24, 1981 Ken Buchanan faced off against Lance Williams at age 36. He was coming in with a record of 61-7 (26). Buchanan lost the fight via 8-round points decision.
On April 4, 1981 Ken Buchanan faced off against Langton Tinago at age 35. He was coming in with a record of 61-6 (26). Buchanan lost the fight via 10-round points decision.
On January 26, 1981 Ken Buchanan faced off against Steve Early at age 35. He was coming in with a record of 61-5 (26). Buchanan lost the fight via 12-round points decision.
On December 6, 1979 Ken Buchanan faced off against Charlie Nash in a lightweight bout at age 34. He was coming in with a record of 59-4 (25). Buchanan lost the fight via 12-round unanimous decision.
On February 27, 1975 Ken Buchanan fought Guts Ishimatsu in a lightweight world-title fight for Ishimatsu's WBC title. Buchanan was 29 years old and with a record of 56-3 (24). Buchanan lost the fight via 15-round unanimous decision.
On June 26, 1972 Ken Buchanan met Roberto Durán in a lightweight (WBA, The Ring) world-title defense fight. Buchanan was 26 years old and with a record of 43-2 (15), and Durán was 21 years old and with a record of 28-0 (24). Buchanan lost the fight via 13th-round TKO and lost the titles.
On January 29, 1970 Ken Buchanan faced off against Miguel Velasquez in a lightweight bout at age 24. He was coming in with a record of 33-1 (13). Buchanan lost the fight via 15-round points decision.