Somebody's 0 - barring a draw or NC - has to go. WBO super bantamweight title at stake, Leo's first defense. Fulton is his mandatory as the #1 contender. The champion is on a hot streak in his last four outings (fellow unbeaten Tramaine Williams, formerly longtime world-rated Mexican warrior César Juárez, and back to back victories over Pinoy journeymen whose records belie their real worth in Marjohn Kiunisala Yap and Neil John Tabanao). The challenger is on a nice one in his own last three (fellow unbeaten prospects Arnold Khegai and Isaac Avelar, plus former titlist Paulus Ambunda) Headlining on Showtime. The co-main sees Vic Pasillas taking on Raeese Aleem, with their zeroes also intact.
Leo will take a few rounds to get going, but find his groove in the 3rd, and dominate Fulton until the final bell, and win a wide UD. The Khegai match was far closer than the judge's scores implied, it was around 7-5 Fulton, although even a draw was feasible. If Arnold just let his hands go a little more late, there'd be cries of a robbery. If someone who isn't this incredible pressure fighter can have that much success, an excellent pressure fighter will dominate him, and Leo impressed the hell out of me in his last few outings.
I'd almost forgotten how crappy Fulton looked (especially late) against Khegai, just had a look through my RBR thread. Honestly not a bad chance Leo stops him considering that he got rid of Juárez in the 11th. I don't think Leo's as much a feather-fist as Fulton despite their very similar records and KO ratios..
That is true when levels are more or less the same, but as @CST80 pointed out Fulton beat Khegai by the skin of his teeth and Leo is better than Khegai.