Alex Pereira vs. Jiri Prochazka: UFC 303 Date, Start Time, TV Channel, and Live Stream There is an exciting new main event in Las Vegas this Saturday. With Conor McGregor withdrawing due to injury, Michael Chandler was left without an opponent, prompting the UFC to find a new headliner for UFC 303. @ESPNMMA #UFC303 #AlexPereira #JiriProchazka This weekend, Alex Pereira will face Jiri Prochazka, stepping in to fill the main event slot in Las Vegas. The two fighters previously clashed at UFC 295, where Pereira secured the vacant light heavyweight title. Here’s all the information you need about the Pereira vs. Prochazka fight. Fight Date and Start Time Date: Saturday, June 29 Main Card Start Time: 10 p.m. ET / 3 a.m. UK (Sunday) Main Event Approximate Start Time: 1 a.m. ET (Sunday) / 6 a.m. UK (Sunday) The main card will kick off at 10 p.m. ET / 3 a.m. UK, with Pereira and Prochazka expected to make their cage walks around 1 a.m. ET / 6 a.m. UK. These times are subject to change depe