Position battles, closers, lineups and Cardinals(!) I'm watching

The St. Louis Cardinals check almost every box when it comes to what fantasy managers should be watching for this spring training. Uncertainty with a starting player or two, as well as with the lineup? You got it. A key injury in the rotation and several battles to decide who starts games in April, plus an established big leaguer who might or might not start? Yep, that's certainly present as well. A hot prospect or two who could win a job and become relevant? Sure! Essentially no current clarity when it comes to the back of the bullpen? Incredible! Relative ambiguity is everywhere for the defending NL Central champions.