Larry Walker is best known for playing with which MLB team?

What position did José Altuve primarily play? José Altuve is best known for playing with which MLB team? What uniform number did José Altuve wear with the Astros? What position did Larry Walker primarily play? What uniform number did Larry Walker wear with the Rockies? What position did Todd Helton primarily play? What uniform number did Todd Helton wear with the Rockies? What position did Roy Halladay primarily play?