The second episode of "UFC Primetime: Dos Santos vs. Mir" averaged 544,000 FX viewers, which was a slight increase from the 540,000 who tuned in for the debut episode.
MMAjunkie.com today confirmed the ratings information with an industry source.
The weekly three-part series previews Saturday's UFC 146 pay-per-view headliner between heavyweight titleholder Junior Dos Santos and challenger Frank Mir.