1952 Rocky Marciano Undefeated Heavyweight Boxing Championship Ring

Rocky Marciano (born Rocco Francis Marchegiano; September 1, 1923 - August 31, 1969) was an American professional boxer and the World Heavyweight Champion from September 23, 1952, to April 27, 1956. Marciano is the only person to hold the heavyweight title without a bout tie or defeat during his entire career. Marciano defended his title six times, against Jersey Joe Walcott, Roland La Starza, Ezzard Charles (twice), Don Cockell, and Archie Moore.

Marciano has been ranked by many boxing historians as one of the best heavyweight boxers of all time.

Marciano, 29, faced the World Heavyweight Champion, 38-year-old Jersey Joe Walcott, in Philadelphia on September 23, 1952. Walcott dropped Marciano in the first round and steadily built a points lead; but in the thirteenth, Walcott used his trademark feint to set up his right hand, but Marciano's "Suzie Q" landed first. Marciano landed a glancing right hook as Walcott slumped to his knees with his arm draped over the ropes. He lay motionless long after he had been counted out and Marciano became the new World Heavyweight Champion. At the time of the stoppage, Walcott was leading on all scorecards, 8-4, 7-5 and 7-4.

His first defense came a year later, a rematch against Walcott, 39, who this time was knocked out in the first round.

Next, it was Roland La Starza's turn to challenge Marciano. After building a small lead on the judges' scorecards all the way to the middle rounds, Marciano won the rematch by a technical knockout in the eleventh round.

Then came two consecutive bouts against former World Heavyweight Champion and light heavyweight legend Ezzard Charles, 33, who became the only man to ever last fifteen rounds against Marciano. Marciano won the first fight on points and the second by an eighth-round knockout. Then, Marciano met British and European Champion Don Cockell. Marciano knocked him out in the ninth round.

Marciano's last title bout was against 38-year-old Archie Moore, on September 21, 1955. The bout was originally scheduled for September 20, but because of hurricane warnings, it had to be delayed a day. Marciano was knocked down for a four count in the second round, but recovered and retained his title with a knockout in round nine.

Marciano announced his retirement on April 27, 1956, aged 32. He finished his career at 49-0.