Like almost everyone else I don't give Thurman much chance.
Gonna take some fighter to deal with the superb, non-stop Duran-esqe body bashing combined with the excellent, consistent southpaw jab. Thurman will quickly be reduced to swinging for a home run when he can trade, he can clump but is hardly Julian Jackson and susceptible to body and head.
Gonna need more than a "lucky" punch to get rid of Spence any time soon.