With Matt Holliday back from his appendectomy and the offense, thanks to David Freese, back from its week-long slumber, the St. Louis Cardinals head to Arizona to take on the Diamondbacks in their best shape since Opening Day. But there's still plenty to worry about—Albert Pujols still hasn't put things together, and the Cardinals open the series with converted reliever Kyle McClellan on the mound in a serious hitters' park for the second start of his career. Sophomore starter Barry Enright takes the mound for Arizona, looking to pick up his second career win against the Cardinals.
After that the Cardinals will throw Chris Carpenter up against erstwhile near-perfect-gamer Armando Galarraga on Tuesday, while on Wednesday they'll send Jake Westbrook to the mound against former New York Yankees prospect Ian Kennedy, who had an excellent 2010 season with the Diamondbacks after coming over in the three-team trade that divvied up, among others, Curtis Granderson, Edwin Jackson, Austin Jackson, and Max Scherzer.
If you're looking for a key to this series from a Cardinals standpoint, the answer is simple: When will Albert Pujols become Albert Pujols? For the Diamondbacks—well, I suppose the key is to keep Albert Pujols from becoming Albert Pujols.