Cards option Anna as Bourjos returns

4/5/15: Peter Bourjos swipes second base, then advances to third after a throwing error by Miguel Montero in the 9th inningMILWAUKEE -- Choosing to stick with an eight-man bullpen for at least a while longer, the Cardinals optioned infielder Dean Anna to Triple-A on Friday to create roster room for outfielder Peter Bourjos, who is returning from paternity leave.

Anna, who joined the team last weekend when Randal Grichuk went on the disabled list, made one pinch-hit appearance during his stay. His departure leaves the Cardinals with a four-man bench until further notice.

In sending down Anna, the Cardinals retain Mitch Harris as an extra arm in the bullpen. The club is just three days into a…