In the "Path to Glory" show opener of the Thompson Boxing fight night, lightweight prospect Zhora Hamazaryan stayed unbeaten by out boxing Sergio Ramirez through four rounds (scores: 39-36, 40-35 twice), World Boxing News reports.

Hamazaryan, who is based in Armenia but will likely relocate to Los Angeles in the near future, dropped Ramirez in the second round with a counter right hook. Hamazaryan, 20, showed solid offensive ability in his U.S. debut.

"I'm pleased with the win," Hamazaryan said. "He was a bit awkward, but it wasn't enough to throw me off what I wanted to do."

Earlier, Hamazaryan defeated Mexico's Sergio Ramirez in the second round en route to a four round unanimous decision victory.