Former World Series of Fighting champion Justin Gaethje made a splash in his Octagon debut, finishing Michael Johnson last week.

For his efforts, Gaethje is ranked sixth in the latest UFC fighter rankings. Johnson, meanwhile, fell four spots to No. 9 at lightweight.

New interim middleweight champion Robert Whittaker debuts in the pound-for-pound Top-15 at No. 13 after his win over Yoel Romero.

At heavyweight, Alistair Overeem climbed two spots to the role of No. 1 contender following his victory vs. Fabricio Werdum.