The Arizona Diamondbacks' 2007 season started with the Diamondbacks attempting to win the NL West Division. The Arizona Diamondbacks' biggest move in the offseason was when, on January 9, 2007, they got their 2001 World Seriesco-MVP back, pitcherRandy Johnson after making a blockbuster deal with the New York Yankees, sending to New York relief pitcherLuis Vizcaino and three other prospects. However, Johnson suffered from injuries and underwent season-ending surgery in early August. Despite Johnson's absence and the fact they have fewer runs scored (712) to runs allowed (732), the Diamondbacks won their first National League West title since 2002 and finished with their first winning record since 2003, and also had the best record in the national league (90-72).
Diamondbacks rookie Chris Young became the first rookie in the history of Major League Baseball to have had 30 home runs and 25 stolen bases in one season.