The Middleweight class in the boxing competition was the third-highest weight class. Middleweights were limited to those boxers weighing a maximum of 75 kilograms (165.3 lbs). 22 boxers qualified for this category. Like all Olympic boxing events, the competition was a straight single-elimination tournament. Both semifinal losers were awarded bronze medals, so no boxers competed again after their first loss. Bouts consisted of six rounds each. Five judges scored each bout.
Preliminaries
Since boxer George Aidoo from Ghana could not compete, a new draw was made after the preliminary bouts. Simon Georgiev from Bulgaria drew a bye.
References
Boxing at the 1968 Summer Olympics – Middleweight Wikipedia(Text) CC BY-SA