No he didn't , he boxed a few rounds , then changed back to lefty.
Some felt that cost him the fight , not boxing southpaw for the entire fight.
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;D Oh dear..
We all just witnessed today in the under card Hugo Centeno knock out Del a Rosa by switching then going slightly square on then slipping to the outside and sending his left hand rear right down the pipe on the change in a perfect set up.
Yeah nice trap ,Del a Rosa fell into it head first too.
Exactly Andre.
To add to this, I have seen many times, an orthodox fighter try to throw the right hand as 'send-off' as the opponent is moving across them but remain in an orthodox stance only to get nailed with something in return. Usually fighters who are not as athletic as they think.
If they did as you mention, they would actually be better equipped to defend themselves.