The rules from the WBC state the both fighters must pass various pre-fight weigh ins, not just the day before fight weigh in. The first of the WBC's mandated weight checks takes place 30 days before fight night, and sees the fighters needing to weigh within 10% of the divional limit. In this case the 30 day weigh in limit was 126.5lbs.
On the scales recently Estrada was bang on that limit, weighing exactly 126.5lbs. Although a former unified champion at Flyweight he did look very good as a Super Flyweight last time out, beating Carlos Cuadras, and it's clear he has grown into the division intelligently, and filled his frame wth muscle rather than just beefing up a few pounds.
As for Srisaket he was actually under the maximum allowed, weighing 125lbs. Helooked confident on the scales in Thailand and has kept the steely determindness in his eyes which we saw last year, when he twice upset Roman Gonzalez on US soil to claim and defend the WBC title. As we all know srisaket is a very big, powerful and strong Super Flyweight and despite being lighter than Estrada at this point he is expected to be the heavier man on fight night.
(Image courtesy of Thairec / Siamsports)