Awkward as **** with an iron chin. Very, very slow feet, pulling out from exchanges he would get caught off balance and shook. Early on, liked to chill on the ropes and absorb. Really good stamina and heavy clubbing hands meant he was dangerous throughout, really wild caveman puncher though. Did really well, considering what gifts he had (heavy hands, toughness) even taking into account the fact Mamby was supposedly robbed against him.
Ruiz probably didn't have a shred of natural athletic ability or "gifts"...which is why I admire him somewhat for compensating in the only way he knew how to.