In 2001, Dat graduated with Honors and was awarded a full scholarship to Northern Michigan University, site of one of the three United States Olympic Training Centers.

He spent three years studying Computer Information Systems while representing the USOEC in National and International competitions as an Olympic Hopeful.

Following his departure from the U.S Olympic Education Training Center, Dat decided to turn professional and made his debut on May 1, 2004 in Atlantic City, New Jersey.

[3] On February 15, 2020, Nguyen defeated Abdiel Velasquez by first-round knockout at BKFC 10: Lombard vs Mundell.

After a hard-fought five-round war, Nguyen came out on top by judges decision to become the new BKFC Lightweight Champion.

"Dat brings a ton of charisma coupled with great skill into the ring and I am happy to showcase his talents," said DiBella.