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AT&T The Winning 11 Decision Day Sweepstakes HTML 5 Site The Marketing Arm hired Groove Jones to create an HTML 5 sweepstakes for their client AT&T as part of a promotional campaign with the MLS. The sweepstakes promotion gives soccer fans the chance to select who they think will win on Decision Day on either their mobile device or on their laptop computer for a chance to win tickets to win a trip to attend MLS Cup on Saturday, December 8, 2018. Game on!