Kemba Walker out for Monday?

The Boston Celtics announced Sunday morning that Kemba Walker is doubtful for Monday night’s home game against the Sacramento Kings with a neck sprain after his collision with teammate Semi Ojeleye during Friday night’s loss in Denver. Walker fell to the ground and hardly moved after running headfirst into Ojeleye’s midsection in the second quarter against the Nuggets; he was eventually immobilized and stretchered off the court and taken to a nearby hospital for evaluation.