Garth Brooks on Saturday (Oct. 6) sold out nine concerts at Kansas City's Sprint Center, a new arena designed to seat approximately 18,000 people. Brooks initially scheduled a Nov. 14 concert in Kansas City to thank Wal-Mart for its efforts in marketing his music in recent years, but tickets were made available to the public and went on sale Saturday morning. When the Nov. 14 concert sold out immediately, tickets to the other eight performances went on sale one-by-one until Brooks' previous obligations prevented him from adding another date. The additional shows, taking place Nov. 5-12, sold out in just under two hours. Brooks' new CD/DVD package, The Ultimate Hits, goes on sale Nov. 6. Brooks has rarely performed since announcing his retirement in 2000. Elton John is scheduled to perform at the Sprint Center's grand opening on Oct. 13.