New York—American Express Open is conducting a search for a creative agency, according to a report in Advertising Age, a sibling publication of BtoB. The incumbent creative agency is Crispin Porter+Bogusky, Boulder, Colo., which won an award last week for World's Best Creative Idea from the New York Festivals International Advertising Awards for its “Small Business Saturday” campaign developed for American Express Open. According to the report, CP+B will participate in the review.