Two judges Mark Consentino and Henry Grant scored Magsayo a 115-113 winner over Russell. Judge Lynne Carter scored their bout a draw, 114-114.
Watch the full video highlights below.
(Video by Premier Boxing Champions)
"This is my dream. My dream finally came true," said an Magsayo moments after the victory. "This is my dream since I was a kid."
Magsayo improves to 24-0 with 16KOs in his boxing career.