Alvarado played for multiple colleges in NCAA, and ended up at University of Texas at Austin.
He played for Spain, Mexico, China, Japan, Taiwan, and Puerto Rico pro ballclubs.
In his first year, he led the team to a Finals finish lost to Benjie Paras-led Formula Shell.
[4] In the middle of the 2000 PBA All-Filipino Cup semifinals against Purefoods, Alvarado found without any evidence or document that he has a Filipino citizenship.
[1][5][3][6][7] Sonny Alvarado This biographical article relating to a Filipino basketball figure is a stub.