Jayson Tatum is now a proud father as he posted a photo of his newborn son on Instagram. The Boston Celtics rookie became a dad at the very young age of 19 years.

In the post, he reveals how great he feels about being a father to a son who carries his name.

“Jayson Christopher Tatum Jr! God’s greatest gift to me! Daddy loves you more than anything in the world man! Truly a blessing🙏🏽❤️!”

https://www.instagram.com/p/Bd4JBerg9Ig/

Tatum posted two photos: a solo pic of the baby and a photo of him and his son together. However, the up-and-coming Celtics star did not reveal the child’s birthdate nor his mother.

According to Player Wives, Tatum has a girlfriend named Samie Amos, but she is not the mother of the child.

“On January 13, 2018, Jayson Tatum proudly introduced the world to his new son, Jayson Christopher Tatum.  However, it would appear that Samie Amos is not the little man’s [mother].  Samie played a full season of Volleyball at Duke last fall, while also posting very not pregnant pictures in recent weeks.”

Tatum is one of the best rookies to come along in recent years. The Celtics' young forward is currently averaging 13.9 points, 5.5 rebounds, 1.3 assists, 1.0 steals, and 0.8 blocks per game. He recorded a career-high 22 points on Oct. 24.

According to the Boston Herald, the Celtics are being cautious with their prized rookie. On Thursday, he suffered from a left knee issue that occurred towards the end of the third quarter versus the Philadelphia 76ers. He was held out of practice last Saturday as a precautionary measure.