The Instagram photo shows Justin's wife Jessica Biel holding Silas in her arms.

Silas represents his father's hometown by wearing a Memphis Grizzlies shirt in the photo.

"The Timberlakes are ready!!! GO GRIZZ! #GritNGrind#Playoffs #BabyGrizzROAR," Timberlake captioned the shot.

The couple welcomed Silas, their first child, on April 11. They got married in October 2012.