As ESPN viewers watch the kickoff to next week’s “ ” game between the Dallas Cowboys and the Arizona Cardinals, ESPN executives will be attempting a pivotal play all their own.

The Disney-controlled sports-media outlet will next week cease reporting separate live viewership figures for linear TV and streaming, and instead report them as a single number. Monday’s broadcast day will be the first on which ESPN will offer a live “total audience” number that reflects both traditional TV watching as well as viewing via streaming services, executives said Friday. ESPN and Nielsen, the media-measurement firm upon whose data the industry relies, will add to that number over the next few weeks, adding in viewing done on mobile screens as well as viewing done via “out of home” sources, like TVs in bars and hotels.

Viewers “consume our content on a wide variety of screens, a wide variety of technologies,” said Ed Erhardt, president of global sales and marketing for ESPN, during a conference call. The company has been in the marketplace since May pitching the new system to advertisers, and Erhardt said all of ESPN’s advertisers have agreed to utilize the linear-plus-streaming figures and “more than 50%” have agreed to utilize viewing from “out of home” sources. “We expect more as they see the data and see the numbers,” Erhardt said. “We feel pretty good about the progress we have made.”

The entire industry is scrambling to count TV viewers who no longer watch their favorite shows with a traditional TV or cable or satellite subscription. Nielsen on Thursday announced it would offer a new service allowing advertisers to measure more specific categories of consumers, such as first-time car buyers or expectant mothers, a sign of efforts being made to help TV sponsors get the same precision and customer targeting they have on digital media. CBS said Thursday it had begun to use Nielsen’s out of home measurement data part of an effort to demonstrate wider viewership than just that taking place for its linear broadcasts.

“We hear the demand and the need for cross-platform measurement every day,” said Jessica Hogue, senior vice president of product leadership for Nielsen.

Mapping out live viewership is of critical importance to ESPN, which depends heavily on live sports telecasts and which has suffered a drop in traditional subscriptions to its cable networks in recent months. Providing evidence of migrating sports fans, and tabulating them up in a way that pleases advertisers could provide the network with a broader audience to sell its clients – and generate more ad money. One of ESPN’s flagship programs, “Monday Night Football,” has suffered a viewership slump, owing in part to a general decline in audience for National Football League broadcasts over the past year.

ESPN expects the Nielsen-verified viewership of live streaming and mobile to add as much as 5% to 7% in younger audiences, said Dave Coletti, vice president of media intelligence at ESPN. “When you add in out of home, it tends to amplify the audience at the younger end” as well, he said.

The measurement shift applies to ESPN and ESPN2 programming, executives said. The “ad load” on linear broadcast and digital streams will be the same.

The switch will change the way ESPN reports viewership. Indeed, a final tabulation may not be available until as much as three weeks after a program airs, executives said. But the same is true of other Nielsen measures that help shape transactions. While many consumers and executives are focused on program ratings, the fact is that the industry now does business on “commercial ratings” that take into account the average viewership of commercial breaks up to as many as three or seven days after a show airs.