For Zapata, I would watch the Olivo and Torres fights. I think those both exhibit him at his very best.
I was pleasantly surprised to see that Zapata actually got in the IBHOF. Still highly underrated but at his best he was a really smooth defensive boxer, one of the slickest southpaws along with Whitaker and Nunn. He was another example of a fighter who was too talented for his own good, being a victim of being lazy and having lackluster performances resulting in losing to guys he should have beat.
I love the words "coke addiction" and "victim" together. The snowflake belief that no one is responsible for his own choices and actipns.