https://www.techradar.com/news/vargas-vs-dulorme-live-stream-how-to-watch-tonights-boxing-online-from-anywhere

Jessie Vargas and Thomas Dulorme lock horns at the Wintrust Arena in Chicago on Saturday, October 6. 

The undercard action begins at 9pm ET / 6pm PT / 2am Sunday BST, so Vargas and Dulorme should enter the ring at around 12am ET, 9pm PT and 5am Sunday BST.