After encountering injuries to pitchers:
Jack Flaherty (10-day IL)
Kwang Hyun Kim (10-day IL)
Miles Mikolas (60-day IL)
Jordan Hicks (60-day IL)
Dakota Hudson (60-day IL)
it has become pretty clear the Cardinals could use some more pitching, specifically starting pitching. Right now the rotation is literally Martínez, Waino, pray for rain-o (because they are the only guys left). The rotation is stretched thin, to say the least. Since the Cardinals are clearly in need of starters, it might even be harder to trade for one without paying a premium. One thing we know about the Cardinals though is they like to shop for bargains.