That was two years ago, I'm sure he learn his lesson and as we can see on his fights after that, he had 3 straight wins, 2 are in KO and one is Split decision against his fellow Filipino Boxer. The last one is something very impressive, it's probably the reason why he was given a break on becoming a top contender against Jason Moloney. I believe it's a 50/50 fight but we are lucky that we can get an odds of an underdog.
Yeah, he had 3 fights after that but he hasn't a boxer with big name in the boxing industry. This will be his next attempt after losing to Donaire if we are talking about real challenge. His last match was pretty much impressive, so you can see that he really have the skills to KO someone even in the early rounds. However, this one is a championship fight, he is the challenger so I'm sure he'll be very careful right from the get go, being careless like what happened against Donaire might lead to another KO loss, although his opponent though doesn't have a high KO percentage but he has KO wins, so it's still possible.
It's Gaballo, not Graballo. It would be another boxer with a different spelling. 
