How to Watch UFC Fight Night 189

Size matters to the Ultimate Fighting Championship.

American Top Team’s Jairzinho Rozenstruik will square off with Gile Ribeiro protégé Augusto Sakai, as two Top 15 heavyweights headline UFC Fight Night 189 on Saturday at the UFC Apex in Las Vegas. Meanwhile, Walt Harris meets Marcin Tybura in the three-round heavyweight co-main event.

UFC Fight Night “Rozenstruik vs. Sakai”—which streams live to ESPN+ at 7 p.m. ET/4 p.m. PT—also features a welterweight clash pitting Santiago Ponzinibbio against Miguel Baeza and three middleweight tilts, as Roman Dolidze faces Laureano Staropoli, Dusko Todorovic confronts Gregory Rodrigues and Tom Breese battles Antonio Arroyo. ESPN+ will stream the undercard in its entirety at 4 p.m. ET/1 p.m. PT, the eight-fight slate of prelims anchored by a women’s flyweight encounter between Montana De La Rosa and Ariane Lipski.

A closer look at the UFC Fight Night 189 particulars:

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THE LINEUP

265: Jairzinho Rozenstruik vs. Augusto Sakai
265: Walt Harris vs. Marcin Tybura
185: Roman Dolidze vs. Laureano Staropoli
170: Santiago Ponzinibbio vs. Miguel Baeza
185: Dusko Todorovic vs. Gregory Rodrigues
185: Tom Breese vs. Antonio Arroyo
125: Montana De La Rosa vs. Ariane Lipski
145: Makwan Amirkhani vs. Kamuela Kirk
265: Tanner Boser vs. Ilir Latifi
170: Francisco Trinaldo vs. Muslim Salikhov
155: Alan Patrick vs. Mason Jones
125: Manon Fiorot vs. Tabatha Ricci
145: Youssef Zalal vs. Sean Woodson
155: Claudio Puelles vs. Jordan Leavitt

THE RUNDOWN

• Preview: The Main Card
• Preview: The Prelims
• By The Numbers: Rozenstruik vs. Sakai
• 5 Things You Might Not Know About Walt Harris
• 5 Defining Moments: Marcin Tybura
• Stand and Deliver: UFC Fight Night 189

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• Sherdog’s Official Mixed Martial Arts Rankings
• Sherdog’s Pound-for-Pound Top 10 Rankings
• Sherdog’s WMMA Pound-for-Pound Top 10 Rankings
• Matches to Make After UFC Fight Night 188