Koto, Tokyo
Jewels 4th Ring was a mixed martial arts (MMA) event hosted by promotion Jewels. The event took place on at Shin-Kiba 1st Ring in Koto, Tokyo, Japan.&lt;ref name="JEWELS 4 - 07/11/2009: Megumi Fujii is Now 18-0! - Full Results"&gt;&lt;/ref&gt;