Diaz is out of the lineup Saturday against the Nationals.
Ruben Tejada will get the start at shortstop and hit seventh, as Diaz starts on the bench after going hitless in his last two games. Diaz is clearly the best offensive option at shortstop for the Cardinals while Jhonny Peralta is out, but Tejada is the superior defensive option, so it will be interesting to see how the team handles their playing time going forward.