Jake Paul's WBA Ranking 'A Slap in the Face,' No. 15 Cruiserweight Craig Parker Says

Jake Paul is now the No. 14 cruiserweight in the WBA rankings ... and you know who's pissed about that?? The guy who was the No. 14 cruiserweight heading into this week -- 20-0 fighter Craig Parker. TMZ Sports spoke with the now-No. 15-ranked boxer…