Chi Chi Ontiveros (Sergio) boxer
- bouts
- 20
- won
- 4
- lost
- 15
- draw
- 1
- Status
- inactive
- Division
- lightweight
- Debut
- 1971-01-20
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Mexico
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1972-05-08 | Jimmy Heair | WWWWWW | Forum, Inglewood | LOST KO |
| 1972-04-17 | Pete Vital | WDWLDW | Forum, Inglewood | LOST Points |
| 1972-03-17 | Jose Valenzuela | WLLLWL | Coliseum, San Diego | LOST Points |
| 1972-03-11 | Gary Montero | LLWWW | Auditorium, Long Beach | WIN Points |
| 1972-03-09 | Tetsuzo Ishimaru | WWWWWW | Olympic Auditorium, Los Angeles | LOST Points |
| 1972-02-24 | Tetsuzo Ishimaru | DWWWWW | Olympic Auditorium, Los Angeles | LOST Points |
| 1972-02-12 | David Diaz | WWWLWW | Municipal Auditorium, Long Beach | LOST Points |
| 1972-01-26 | Demetrio Plascencia | LWLL | Las Vegas | WIN KO |
| 1972-01-12 | Allen Gant | debut | Silver Slipper, Las Vegas | WIN KO |
| 1972-01-06 | Joey Vincent | LWLWLW | Sahara Tahoe Hotel, Stateline | WIN Points |
| 1971-12-09 | Miguel Mayan | WLLWWW | Sahara Tahoe Hotel, Stateline | LOST Points |
| 1971-11-27 | Carlos Barragan Vasquez | WWWWLW | Municipal Auditorium, Long Beach | LOST Points |
| 1971-11-03 | Miguel Mayan | WWLLWW | Silver Slipper, Las Vegas | LOST Majority decision |
| 1971-09-23 | Rodrigo Contreras | WWDWWW | Olympic Auditorium, Los Angeles | LOST Points |
| 1971-09-13 | Carlos Barragan Vasquez | WWWWWW | Club 21, National City | LOST Points |
| 1971-08-18 | Carlos Barragan Vasquez | LWWWWW | Silver Slipper, Las Vegas | LOST Points |
| 1971-07-14 | Jose Angel Herrera | WWLWWW | Coliseum, San Diego | LOST Unanimous decision |
| 1971-03-29 | Jose Angel Herrera | LWWWWL | Club 21, National City | LOST KO |
| 1971-02-22 | Ron Ceniceroz | WWLLWW | Club 21, National City | DRAW Points |
| 1971-01-20 | Al Ford | WWWWWW | Sales Pavilion, Edmonton | LOST Technical knockout |