Well, they have no choice to move the odds if people are putting a lot of money on Pacquiao to win, they will have to balance the odds as their concern is just to make commissions on the winning bets, they are not really like casinos or the house that accepts the bet against themselves.
It already happened in other sports AFAIR, like in the NBA, in the opening line, one team is the favorites but where there's bad news that could potentially affect the performance of the favorites, the odds flip and the underdog become the favorites, so bookies have no problem with that.
My prediction is Pacquiao will still remain as the underdog though the odds will decrease a bit.
Probably, Manny Pacquiao will still be an underdog in this match but the odds may not be as huge as it opens.
If you really are a Pacman fan, the best time to place the bet was when the odds were still @3.xxx.
Personally, I'm not going to bet early even though the stake is high because my money would be a trap for a long period of time which I don't like
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Videos of Manny training really hype this fight in his favor, don't be deceived by that aspect because that's normal for Manny when he trains. I would be like a broken record here, endurance and stamina would be the critical factor coming into this fight.
I have once predicted the odds amendment a week before the fight as Kasabus believe it going to happen because the booker won't also want to make huge losses since the odds determine that amount that will pay to bettors but I still consider Pacman to be the underdog cause odds are implemented footing the fighter activities in the game and winning chance.
I am not used to booker operate when odds is amended, will they also change the odds of early bettor when the odd is amend?