The king of concert ticket sales probably isn't who you'd expect: Kenny Chesney has sold 9.8 million concert tickets over the past decade, making him North America's top-selling touring act. The country star started performing stadium concerts in 2003, and the Wall Street Journal chalks up his success to "relentless touring" since then (his 65 tour buses are expected to go through $280,000 worth of diesel fuel over the next two weeks). According to Pollstar, Dave Matthews comes in second to Chesney, followed by Bruce Springsteen. (More Kenny Chesney stories.)