Slugger Albert Pujols has a message for the Cardinal Nation.  In a letter published in Friday's "St. Louis Post-Dispatch," Pujols calls his decision to leave the Cardinals for the Angels incredibly difficult.  The three-time MVP says, quote, "I want to thank each and every one of you sincerely from the bottom of my heart for the love and support you have shown me and my family for the past eleven years."  Pujols agreed to a lucrative 10-year contract with Los Angeles on Thursday.