Spence could've fought behind his jab and decided not too.
It's a simple calculus. Porter's number of fights and how he fought them is more sound than saying what Errol could have have done.
I feel like I have to say this in every Spence/Crawford thread...
I'm a huge fan of both dudes. I'm one of the first Errol fans here. I remember when he went pro and Ronnie Shields telling me he had next.
I just don't think any fighter is invincible.