https://streamable.com/fs5tv Look at that hand speed. With the old film it almost looks as if he punches once, but if you look at Saddlers face you clearly see he gets hit twice.
I could clearly see a double jab. Pep's flicking it out to keep distance. Not really any power, or full extension in the second.
The second was a funny type of "punch". He almost dragged it sideways across his cheek which is what moves his face sideways.
Very dangerous punch but worth it if you have the hand speed and reflexes. Almost every trainer will tell you to retract the arm all the way before punching again but Pep has serpent level fluidity and speed and can pop it out twice. Very telling that the opponent reacts as if he had a fly in his face. That indicates the punches were so blindingly fast he couldn't react until after he got hit twice.