According to Nielsen Media Research ratings released Tuesday, the Alexander-Berto bout drew a peak audience of 1,266,000 viewers in prime time Saturday night. That 12-round main event, which Berto won by split decision, attracted an average audience of 1,193,000 viewers.
https://www.boxingscene.com/berto-alexander-broadcast-on-fox-peaked-1266000-viewers--130700
https://www.boxingscene.com/berto-alexander-broadcast-on-fox-peaked-1266000-viewers--130700