[5] Two days later, the Enforcers shipped his rights to the Talk 'N Text Tropang Texters via a complicated three-team which also involved TNT's sister team, NLEX Road Warriors.

On August 27, 2015, both he and #1 pick Moala Tautuaa signed maximum three-year rookie contracts with the Talk 'N Text Tropang Texters worth ₱8.5 million.

[9][10] As of the end of 2023–24 season[11] As a member of the Gilas Cadets, Rosario saw action in the 2015 Southeast Asian Games and the 2015 SEABA Championship, where his team won gold medals on both occasions.

He has also developed a decent outside shot extending to the three-point area which makes him a tough cover considering that he can also put the ball on the floor and score on the low block.

[15] He is the older brother of CJ Rosario, a former member of the Arellano University's women's volleyball team,[16] now playing professionally for the Petron Tri-Activ Spikers in the Philippine Super Liga.