He wears number 11.
The Cardinals' #11 jersey is not retired for anyone. It is currently held by third base coach Jose Oquendo.
Currently, Matt Holliday.
Currently, Carlos Beltran.
Currently, Jake Westbrook (Pitcher)
Currently, Mark McGwire.
Shortstop Rafael Furcal currently wears number 15.
Currently, hitting coach Mark McGwire.
Matt Holliday! He currently bats clean-up behind Albert Pujols.
Carlos Martinez is number 44 on the St. Louis Cardinals.
Currently, Mike Matheny (manager)
Currently, David Freese bats fifth in the St. Louis Cardinals lineup.
Allen Craig is number 21 on the St. Louis Cardinals.