The most recent of those set backs was a split decision loss to Kentaro Masua last June, in a battle for the Japanese title, and since then it seems that Kawaguchi has been pondering his future.
Today that pondering came to an end as he took his frustrations out on a Thai foe, who showed some fighting spirit but took a bit of a hiding.
Kawaguchi showed some ring rust early but shook that off and began to clearly hurt the Thai in round 4, dropping him late in the round when the bell saved him. Sadly for the visitor he wasn't as lucky in round 5 and Kawaguchi quickly jumped on him and stopped him after just 36 seconds of the round.
It's unclear where Kawaguchi will be heading next in his career, but with his ability and style there will be openings for him going forward and hopefully he gets to face a more notable foe next time out.
(Image courtesy of boxmob.jp)