Pac only weighed 142lbs for the fight and there was no official fight night weight announced. Delay Hoya wasn't dehydrated, that was just a bunch of BS that Goldenboy spun on monday morning as part of the damage limitation and it stuck with fans as the excuse for him getting a beating. Also Oscar could have weighed 147lbs so he has only himself to blame for coming in at 145lbs.
Although Toprank was Mannys main promoter, for a short spell Goldenboy were also part co-promoters of him too due to Manny accepting a suitcase containing 500k from Oscar with the promise that he would sign with Goldenboy. A judge decided that it was an illegal approach from Goldenboy so Toprank would still be his main promotional outfit but did include that Goldenboy would be secondary promoters for a short spell of time.
Roach admitted he seen Oscar running laps round a track and looked dehydrated he also said he seen track marks on Oscars arms from when they tried to hydrate him. It can be found on the same interview where Roach says they will only fight Shane at 141 lbs for his WW title.