Puton, who is highly ranked by the GAB, has lost 3 of his last 4, though two of those were very close decisions. Notably however he has never been stopped and is a really tough ask for a novice professional like Masaki, despite the fact Masaki is highly experienced from his days as an amateur.
Although not a fighter with a sparkling record Puton has mixed with good opponents, including Ye Joon Kim, JR Magboo and Randy Braga. Notably he has also never been stopped and has proven he's as a tough fighter. Notably however Puton is stepping up to face a genuine Lightweight and the weight might be a step too hiugh for Puton, who has been fighting as low as Super Bantamweight in recent bouts.