What happened: Jimmy Crooks’ contact quality and defense support continued opportunities despite uneven production. Jordan Walker’s adjustments, Michael McGreevy’s progress against left-handed hitters and Nathan Church’s defense also factor into St. Louis’ evaluations.

Why it matters: Moving too quickly risks repeating the lesson of the Randy Arozarena trade. Waiting too long can consume roster opportunities that could go to another developing player.

What to watch: The Cardinals will watch whether Walker, McGreevy and Church turn developmental progress into sustained results.