Caldwell | | | |align=left| |align=left| |- align=center |Loss |47-8-1 |align=left| Floyd Patterson | | | |align=left| |align=left| |- align=center |Win |47-7-1 |align=left| Alvin Lewis | | | |align=left| |align=left| |- align=center |Loss |46-7-1 |align=left| Muhammad Ali | | | |align=left| |align=left| |- align=center |Win |46-6-1 |align=left| Luis Pires | | | |align=left| |align=left| |- align=center |Win |45-6-1 |align=left| James J Woody | | | |align=left| |align=left| |- align=center |Win |44-6-1 |align=left| Manuel Ramos | | | |align=left| |align=left| |- align=center |Win |43-6-1 |align=left| José Menno | | | |align=left| |align=left| |- align=center |Win |42-6-1 |align=left| Santiago Lovell | | | |align=left| |align=left| |- align=center |Loss |41-6-1 |align=left| Miguel Angel Paez | | | |align=left| |align=left| |- align=center |Win |41-5-1 |align=left| Santiago Lovell | | | |align=left| |align=left| |- align=center |style="background:#abcdef;"|Draw |40-5-1 |align=left| Gregorio Peralta | | | |align=left| |align=left| |- align=center |Win |40-5 |align=left| Wilhelm Von Homburg | | | |align=left| |align=left| |- align=center |Win |39-5 |align=left| Luis Pires | | | |align=left| |align=left| |- align=center |Loss |38-5 |align=left| Joe Frazier | | | |align=left| |align=left| |- align=center |Win |38-4 |align=left| Jim Fletcher | | | |align=left| |align=left| |- align=center |Win |37-4 |align=left| Leotis Martin | | | |align=left| |align=left| |- align=center |Win |36-4 |align=left| Zora Folley | | | |align=left| |align=left| |- align=center |Win |35-4 |align=left| Roberto Davila | | | |align=left| |align=left| |- align=center |Win |34-4 |align=left| Lee Carr | | | |align=left| |align=left| |- align=center |Win |33-4 |align=left| Alberto Benassi | | | |align=left| |align=left| |- align=center |Win |32-4 |align=left| Felipe Pedro Marich | | | |align=left| |align=left| |- align=center |Loss |31-4 |align=left| Jimmy Ellis | | | |align=left| |align=left| |- align=center |Win |31-3 |align=left| Karl Mildenberger | | | |align=left| |align=left| |- align=center |Win |30-3 |align=left| Carlos Vazquez | | | |align=left| |align=left| |- align=center |Win |29-3 |align=left| Luis Pires | | | |align=left| |align=left| |- align=center |Win |28-3 |align=left| Pablo Sagrispanti | | | |align=left| |align=left| |- align=center |Win |27-3 |align=left| Hubert Hilton | | | |align=left| |align=left| |- align=center |Win |26-3 |align=left| Jose Giorgetti | | | |align=left| |align=left| |- align=center |Win |25-3 |align=left| Roberto Veliz | | | |align=left| |align=left| |- align=center |Win |24-3 |align=left| Alberto Benassi | | | |align=left| |align=left| |- align=center |Win |23-3 |align=left| Amos Johnson | | | |align=left| |align=left| |- align=center |Win |22-3 |align=left| Alberto Benassi | | | |align=left| |align=left| |- align=center |Loss |21-3 |align=left| Joe