https://mixedmartialarts.com/mma/ufc-oklahoma-city-preview-du-plessis-vs-usman-headlines-a-middleweight-heavy-card-with-strickland-watching/ MixedMartialArts.com en 2026-07-17T23:49:49Z UFC Oklahoma City preview: Du Plessis vs. Usman headlines a middleweight-heavy card with Strickland watching