Khalil Rountree Jr.'s plan appeared to be working for a while at UFC 307, until Alex Pereira did what he usually does. The result: a fourth-round KO and further evidence that Pereira is a terrifying individual,

One of the most remarkable runs in UFC history continues, but after much more difficulty than expected. Alex Pereira methodically broke down a game Khalil Rountree Jr. and used a bruising sequence of body punches to retain his light heavyweight championship with a fourth-round stoppage Saturday night in the main event of UFC 307 at the Delta Center in Salt Lake City.