Guaranteed Rate sponsors Chicago White Sox "We are pleased to find, in Guaranteed Rate, a new naming rights partner founded in Chicago by Chicagoans, which shares our commitment to the city and to our fans," White Sox chairman Jerry Reinsdorf said in a statement in the press release. "We view this partnership as an opportunity to connect a successful Chicago business with a historic baseball franchise, and we look forward to growing this important relationship over the coming years as millions of fans enjoy White Sox baseball at Guaranteed Rate Field."
National Car Rental partners with Chicago White Sox ST. LOUIS, April 21, 2016 /PRNewswire/ -- National Car Rental today announced four new sponsorship agreements designating National as the official car rental partner of the Houston Astros, Baltimore Orioles, Texas Rangers and Chicago White Sox. These teams join National's MLB sponsorship portfolio that already includes the Los Angeles Angels, St. Louis Cardinals, New York Mets and Kansas City Royals. The new multiyear agreements extend National's partnership status through the 2020 Major League Baseball (MLB) season.