Invicta FC 8: Waterson vs. Tamada was a mixed martial-arts event that took place on September 6, 2014. Background Invicta FC 8 was the first Invicta event to be broadcast on UFC's Fight Pass as part of the new deal between Invicta and UFC. Invicta FC 8 was headlined by Michelle Waterson defending her atomweight championship against Yasuko Tamada along with a co-main event of Stephanie Eggink vs. Katja Kankaanpää for the vacant strawweight championship. The event also featured the third fight between Roxanne Modafferi and Tara LaRosa. After the event, the co-main event of Katja Kankaanpää vs. Stephanie Eggink was awarded Fight of the Night. Main Card: Michelle Waterson def Yasuko Tamada, Katja Kankaanpaa def Stephanie Eggink, Tonya Evinger def Ediane Gomes, Roxanne Modafferi def Tara LaRosa, DeAnna Bennett def Michelle Ould, Charmaine Tweet def Veronica Rothenhausler.