Jared Sullinger day to day, 50/50 to play Friday

From ESPN Boston's Chris Forsberg:

Sullinger sitting out practice Thursday; Rivers deemed him 50/50 vs. ORL on Friday.
— Chris Forsberg (@ESPNForsberg) January 31, 2013

And From The Boston Herald's Mark Murphy:

Sullinger remains day to day but will not practice today. Despite chronic back trouble, this his 1st missed practice of year.
— Mark Murphy (@Murf56) January 31, 2013

@lucidsportsfan eventually on the blog. Just waiting on a call now. Doc said "it's something youdeal with when u have a (bad) back
— Mark Murphy (@Murf56) January 31, 2013

 Follow Mark on twitter @LucidSportsFan