This is a good step up fight for Jalan Walker who is a underrated prospect at 8-0. Angel Antonio Contreras is 11-4-1 but has faced a good level of opposition and showed hes a decent fighter.
Jalan Walker is a good technical southpaw who seems to possess good power while Contreras is a fairly basic come forward fighter.

I expect Jalan Walker to win by knockout in three or four rounds due to having more power and being better technically.