Flaherty (0-1) took the loss against the Reds on Wednesday, giving up three runs on four hits and two walks over 4.1 innings while striking out three.
The rookie right-hander has yet to throw more than five innings in any of his three big-league starts, and while Flaherty's 13:7 K:BB in 13.1 innings shows promise, his 6.08 ERA isn't helping the Cards stay in the NL playoff chase. If Adam Wainwright is able to return to the rotation next week, expect Flaherty to shift to the bullpen.