The Celtics have begun to backslide. They need to take ownership and man up, Jayson Tatum said. His teammates echoed the sentiment.

As a dangerous January schedule looms, Boston hasn't been playing up to its standard recently, falling 4 games out of first in the East.

Joel Embiid popped up from a pregame fall and scored 27 points with nine rebounds, making 4 of 5 from 3-point range and sinking a pair of free throws with 3 seconds left to turn back Boston's final rally and lead the Philadelphia 76ers to a 118-114 victory on Wednesday.