RISE 142 took place on September 4, 2020, at Korakuen Hall in Tokyo, Japan. In the main event, challenger Kazuki Osaki dropped champion Tatsu Tamaru en route to a unanimous decision to claim the RISE super flyweight title. In the semifinal, Taison Maeguchi defeated Yoshihisa Morimoto by unanimous decision.
| Actor | Role |
|---|---|
| TTatsu TamaruSelf | Self |
| KKazuki OsakiSelf | Self |
| YYoshihisa MorimotoSelf | Self |
| TTaison MaeguchiSelf | Self |
| KKazuya OkuwakiSelf | Self |
| KKoki OsakiSelf | Self |
| AAzusa KanekoSelf | Self |
| YYousukeSelf | Self |
| SSatoshi KatashimaSelf | Self |
| YYuzuki SakaiSelf | Self |
| HHaruka AsaiSelf | Self |
| YYuka MurakamiSelf | Self |
 Ren SugiyamaYA-MAN | YA-MAN |
| SSenichiSelf | Self |
| GGoki SugiyamaSelf | Self |
| RReo YoshidaSelf | Self |