Jersey Joe Walcott vs. Rocky Marciano (1st meeting)
1952-09-23 : Rocky Marciano 184½ lbs beat Jersey Joe Walcott 196½ lbs by KO at 0:43 in round 13 of 15
- Location: Municipal Stadium, Philadelphia, Pennsylvania, USA
- Referee: Charlie Daggert 4-7
- Judge: Pete Tomasco 5-7
- Judge: Zach Clayton 4-8
A left hook from Walcott knocked Marciano down for the first time in his career, for a count of four, in round one. Marciano was behind on points going into round thirteen when a terrific right to the jaw put Walcott down and out.