LOUISVILLE, Ky.--(BUSINESS WIRE)--Tricon Global Restaurants, Inc. (NYSE: YUM - news) today reported estimated U.S. blended same-store sales at company restaurants increased 2% during the four-week period ended December 1, 2001 (Period 12). Tricon's International business reported year-to-date system-sales growth of 9% prior to foreign currency conversion or +2% versus last year's level after conversion to U.S. dollars.