Boston small business owners, check out this amazing opportunity! Thanks to @Mastercard and the @RedSox, you can enter the Home Team Advantage contest now for a chance at $10,000! #MastercardAmbassador No Purch Nec. Must be U.S. res, 18+ & small biz owner in Boston. Ends 8/1. Rules: mastercard.us/hometeamadvantage