Robert Whittaker has opened as the early betting favorite over Kelvin Gastelum following the announcement of their headlining middleweight bout at UFC Fight Night 188.
Best Fight Odds have Whittaker, the former UFC middleweight champion, listed as the -275 favorite while TUF 17 winner Gastelum opens as a +220 underdog.
UFC Fight Night: Whittaker vs. Gastelum:
Kelvin Gastelum (+220)
Robert Whittaker (-275)
Whittaker was originally slated to face top-three ranked middleweight Paulo Costa, but the Brazilian was forced to pull out of the bout earlier this week due to health complications.