Pitching has been way up and way down. Hitting has been way up and way down.
It's kept them hovering around the .500 mark and in the hunt in an unpredictable division that didn't appear to have much of a difference between first and last place until the recent slides for the Pittsburgh Pirates and Cincinnati Reds.
So the expected battle among the Chicago Cubs, Cardinals and Milwaukee Brewers could last until Game 162.
With the possibility of ending a playoff drought, the Cardinals aren't in the market to sell. But is buying really a good idea?
It's time for the Cardinals to put up the caution sign when attempting to upgrade for a late-season push.
Flapping their wings harder because it's #TimeToFly might only lead to a #TimeForRapidDescent.
Recent moves to win now haven't quite worked out for St. Louis and Busch Stadium hasn't been open in October for three consecutive years.
When it's time to buy those summer clothes, make sure you're not selling ones that'll come in handy next spring and the next spring and the spring after that.
The wrong deal could mean more cold and dreary conditions in the fall.
This Cardinals team isn't in a good position to trade away young talent for a one- or two-year rental.
The big upgrade of the 2017 offseason, Marcell Ozuna, is likely gone after this season.
The Miami Marlins might end up being the winner of that deal, considering Sandy Alcantara made the All-Star team and Zac Gallen has pitched well this season.
Those are two arms that would be useful now for the Cardinals with Michael Wacha struggling in a contract year and Adam Wainwright nearing the end of his career.
So with the potential need for a left fielder next season, along with inconsistent play by Dexter Fowler and Harrison Bader, holding onto outfielders at all levels is a must.
Looking a couple years down the line, a replacement at second base might be needed if Kolten Wong doesn't end up being worth the $12.5-million option in 2021.
Really the only infield positions that could be locked down the next few years are Paul DeJong at shortstop and Paul Goldschmidt at first base.
Third base is an unknown with Matt Carpenter's struggles this season.
We've checked off having wiggle room to send away any outfield prospects, infield prospects or pitching prospects.
That doesn't leave many options for being a buyer at the deadline.
The best move is no move. Just wait and see what this group can produce in the second half of the season and go from there.