From the opening round Otake took the initiative, using his jab and applying pressure on the Thai who was tagged hard by the occassional right hand. By round 4 the looked over as a contest and the question wasn't whether Otake would win, but when he would win with San doing well to survive. Sadly for Saknarong the longer he survived the more punishment he took with round 5 being a painful one before he was stopped in round 6.
According to sources close to the Kaneko Gym this bout was being described as a "world title prelude" for Otake, aka a tune for a world title fight. It's hard to see which world champion Otake would be up against though the bout did take place at Featherweight and it may be that he's looking for a title shot at 126lbs, possibly even a return to the UK to face Lee Selby though that wasn't explicitly stated by anyone from his team.
Note-Boxrec.com lists San as having a 3-4 record.
(Image courtesy of boxingnews.jp)