As assistant coach: Gerardo "Jack" Santiago is a Filipino former basketball player and coach who currently serves as head coach of UE Red Warriors.
[2] Santiago also played in PBA teams such as Sunkist Orange Juicers, and Sta.
[3] Santiago previously served as lead assistant to Franz Pumaren in La Salle, Air21, and Adamson.
Santiago was named as UE Red Warriors head coach on 2022.
[4][1][5] Santiago was suspended by the UAAP in 2022 after he instructed his players to intentionally harm Ricci Rivero of the UP Fighting Maroons.