The Celtics star makes his TV commercial debut in an ad reinforcing the value of family and hard work on and off the court.

Celtics champion Paul Pierce agreed with Tatum, and added why he thinks the 26-year-old is underappreciated. “He plays for Boston. It’s just what it is,” Pierce said on “KG Certified." “Even Larry Bird was underappreciated because at one point, he was the best player in the league even though it was always Magic (getting the attention).

Jayson Tatum sparked some debates this week when he shared he felt underappreciated. Paul Pierce and Kevin Garnett agree with him.

Sports analyst Colin Cowherd has pinpointed one major factor holding Jayson Tatum back from becoming the next face of the NBA.

Eighty-three points from Jayson Tatum and Jaylen Brown weren’t enough to push the Celtics past the first-place Cavs in a 123-116 loss at TD Garden.