Arum said: "Even though he was winning, nobody would credit him as being legitimate because he looked like a slob - it was always, 'Yeah, he's a fat slob but his hands are so fast'.
Ruiz would go on to lose nearly a stone and a half in a bid to gain appreciation for his wins and said cutting out fast foods was the key.
He revealed: "A lot of stuff, all the fast food, the cheap food, the dollar menu - I had to cut all that off. You can train so hard and eat bad stuff and you're training for no reason."
In Ruiz’s last fight he beat Alexander Dimitrenko - who has fought former Parker, Bryant Jennings and Kubrat Pulev - and halted the German in five rounds while the sun was still shining.
The win came at the Dignity Health Sports Park - a university campus in California - which hosts LA Galaxy fixtures.
Ruiz's victory was next to the football pitch, on the tennis court arena, with the fight taking place in the daytime before former two-weight world champ Danny Garcia topped the bill by beating Adrian Granados.
dude even hit the ref with the "yes I can fight" while backpedaling and chilling trying to keep it together
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