Cardinals demote top prospect Jordan Walker to Triple-A and sign Taylor Motter.

The St. Louis Cardinals have sent rookie outfielder Jordan Walker to Class AAA Memphis, while bringing back infielder Taylor Motter to the major league roster. Walker had been struggling at the plate recently, prompting the team to give him some time away from the lineup to work on reducing his groundball rate. The Cardinals' outfield has become a jumble of playing time with no clear everyday starter, and the move adds to the turbulent feel of their current road trip. The Cardinals have not yet provided an explanation for the move.