Surging bantamweights Sean O'Malley and Marlon Vera were all business during their final staredown ahead of the UFC 252 co-main event, which takes place Saturday in Las Vegas. For more MMA news: https://mmajunkie.usatoday.com Upcoming events: https://mmajunkie.usatoday.com/schedule Fighter rankings: https://mmajunkie.usatoday.com/rankings Connect with MMA Junkie on social media! Like us on Facebook: https://facebook.com/officialmmajunkie Follow us on Twitter: https://twitter.com/MMAjunkie Find us on Instagram: https://instagram.com/mmajunkiedotcom Subscribe to get the latest MMA news and videos: https://www.youtube.com/channel/UCxQfUu6vIJGZDODSwhr0m9w?sub_confirmation=1