Kenny Chesney has confirmed an additional 11 stadium concerts in 2009, including shows in Chicago, Dallas, San Francisco and Seattle. The tour dates were announced Tuesday (Jan. 20). His support acts will be Sugarland, Montgomery Gentry, Miranda Lambert and Lady Antebellum. A previously-announced show on Aug. 15 at Gillette Stadium near Boston recently sold out in less than 10 minutes. All of the acts will appear at Gillette Stadium and at the following cities and venues: Louisville, Ky., Papa John's Cardinal Stadium (May 30); Pittsburgh, Heinz Field (June 6); Chicago, Soldier Field (June 13); Philadelphia, Lincoln Financial Field (June 27), Seattle, Qwest Field (Aug. 1), Detroit, Ford Field (Aug. 22) and Indianapolis, Lucas Oil Field (Sept. 19). Montgomery Gentry will not be performing at these dates: Dallas, Pizza Hut Park (May 2), Columbus, Ohio, Crew Stadium (May 23), San Francisco, AT&T Park (July 18) and Salt Lake City (July 23). Other dates for Chesney's Sun City Carnival tour will be announced soon.