ShowtimeCarson, California
Charlo dropped Castano twice in the tenth round. Castano was badly hurt and the referee waved off the fight.
| Round | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | TOTAL |
| Charlo | 10 | 10 | 9 | 10 | 9 | 9 | 10 | 10 | 10 | 87 | |||
| Castano | 9 | 9 | 10 | 9 | 10 | 10 | 9 | 9 | 9 | 84 |
Knockout in Tenth