Starting tonight, MLB sponsor T-Mobile is leveraging the MLB postseason with what it is calling “THE Biggest 7th Innings Stretch Ever #TheBig7th." Fans are being encouraged through MLB media to post "video selfies" of themselves singing "Take Me Out to the Ballgame." A mashup version of the tune will be turned into a 60-second TV ad which will run in the seventh inning of World Series Game 4 on Oct. 25 .
"It’s a great way for us to demonstrate all this user-generated content coming together over our ‘data-strong’ network," said T-Mobile Dir of Sponsorships & Events Meredith Starkey , adding that the promotion came together in less than three weeks. T-Mobile, presenting sponsor of the NLCS on Fox and World Series coverage on MLB.com, has already captured players from the Orioles and Royals singing the tune and will add celebrities, MLB broadcast talent and others on their own social sites and website.

