The highlight video showed almost the entire fight itself already, but here's the complete play-by-play of the bout:
Philip De Fries vs. Stipe Miocic - Round 1 -De Fries with a weird pushing overhand right but now opens up and lands some harder shots that back up Miocic. Now Miocic opening up and De Fries drops and Miocic follows up with some big shots and De Fries is out. Stipe Miocic wins by KO (punches), 0:43 of round 1.
Here's a quick tidbit on the bout from the post-fight analysis provided by Brent Brookhouse shortly after the event ended:
Philip De Fries pushes his punches so much that getting into a firefight with Stipe Miocic was destined to end poorly. Miocic's striking is not as good as advertised due to the (almost always pointless) "golden gloves champion" title, but he has more snap on his punches so he was able to finish him off.