The Country Throwdown tour has canceled four concerts because of low ticket sales and competition from other country concerts, according to tour producer Kevin Lyman. The tour features headliners Montgomery Gentry, Jack Ingram, Little Big Town and Jamey Johnson, along with several support acts on multiple stages. Cities that have been dropped from the schedule include Houston (June 9), Dallas (June 10), San Diego (June 17) and Phoenix (June 18). In addition, the Bakersfield, Calif., date has been moved to June 18. The tour will continue Friday (June 4) in Virginia Beach, Va., and conclude on June 20 in Mountain View, Calif.