In 2004, ARC Weekly released its chart of top pop artists since the last 25 years and Adams came up at number 13 in the chart with four number-one singles, ten top five hits and 17 top ten hits. Six years after the release of "On a Day Like Today", "Room Service" was released in September 2004. It topped the charts in Germany and Switzerland and peaked at number four in the UK, selling 440,000 copies in its first week in Europe and thus debuted at number one on "Billboard"'s European album chart. The single, "Open Road", was the most successful single from the album and peaked at number one in Canada and number twenty-one in the UK. In May 2008, the album was also released in the US but charted only at number 134 on the "Billboard" 200. While touring in North America to promote the album, Adams shared the stage for about 25 concert tours with Def Leppard, giving meaning to the phrase "Take me out to the ball game" completely new as co-headliner of the "Rock 'N Roll Double-Header Tour". He joined for the first time and performed at 26 minor league baseball parks.