[2] Baltazar played his college career with the De La Salle Green Archers and had a short stint with the San Juan Knights of the MPBL.

In 2022, he would make his professional debut with the Pampanga Delta before moving to Japan's B.League to play for the Hiroshima Dragonflies.

Baltazar played in the University Athletic Association of the Philippines (UAAP) in high school and college.

[7][8] He would later make his professional debut with his hometown team Pampanga Delta of the NBL–Philippines playing a game on the same day as the PBA draft.

[12] On January 4, 2023, Baltazar announced his commitment to play for the Seoul Samsung Thunders of the Korean Basketball League.

However, he failed for show up for the team and the KBL would eventually ban him from the league for two years for a breach of contract.

[13] He was selected with the first overall pick by the Converge FiberXers, but committed to finished the 2024 MPBL season with the Giant Lanterns as per his contract with the team.