Roger Mayweather vs. Julio Cesar Chavez (2nd meeting)
1989-05-13 : Roger Mayweather 138¾ lbs lost to Julio Cesar Chavez 140 lbs by RTD at 3:00 in round 10 of 12
- Location: Great Western Forum, Inglewood, California, USA
- Referee: Henry Elesperu
- Judge: Franz Marti
- Judge: Chuck Hassett
- Judge: Tamotsu Tomihara
- Mayweather retires after round 10, complaining of stomach cramps.
- Marty had Chavez ahead 99-92, while the other two judges favored Chavez, 98-92.