Rockies set to open season Friday in Houston

Colorado Rockies' Troy Tulowitzki jokes with Seattle Mariners catcher Miguel Olivo during the first inning of an exhibition baseball game on Wednesday, April 4, 2012, in Scottsdale, Ariz.  Photo by THE ASSOCIATED PRESS
Colorado Rockies' Troy Tulowitzki jokes with Seattle Mariners catcher Miguel Olivo during the first inning of an exhibition baseball game on Wednesday, April 4, 2012, in Scottsdale, Ariz. Photo by THE ASSOCIATED PRESS
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