One of the most important outside hitters of the Petron Blaze Boosters, Don Don Hontiveros, was diagnosed to have suffered an ACL injury which was initially diagnosed to be only a minor muscle injury. The team doctor of the Petron Blaze Boosters, Dr. Canlas was the one who checked-up Hontiveros after he suffered an injury in Petron's first game against B-Meg.
And, just a while ago, Idol Snow Badua Tweeted that Don Don will have to undergo surgery and that it will take 6 months for him to fully recover. Petron will definitely miss his outside shooting.
If we will do the math, he will be back for Petron next year, maybe around April-May 2012. That will already be in the PBA Season 37's 3rd Conference.