Through the first six weeks of the NFL season, total viewership of games is down 7.5 percent, compared with the first six weeks of 2016.
An average of 15 million people watched games for the first six weeks this year, compared with 16.2 million people through Week 6 last season, according to metrics from Nielsen.
An NFL spokesman didn’t immediately return a message from ESPN seeking comment.
In the past week, Credit Suisse lowered its price targets on both Fox and CBS stock, citing NFL ratings declines.
“If ratings don’t improve materially, we see a potential headwind to domestic advertising revenues,” the investment bank’s analyst Omar Sheikh wrote of Fox on Thursday.