Carlos Martinez was given permission to leave the team Friday to deal with a civil lawsuit he's facing in South Florida.
Yadier Molina went 2-for-4 with a double as the Cardinals fell to the Nationals on Saturday afternoon.
Jaime Garcia was dealt his second loss of the season on Saturday, surrendering four runs on four hits over 6 1/3 innings against the Nationals.
Cardinals general manager John Mozeliak said Friday that he expects Jhonny Peralta (thumb) to begin a minor league rehab assignment around May 21.
Aledmys Diaz is not in the Cardinals starting lineup for Saturday's showdown against the Nationals.
Stephen Piscotty is not in the Cardinals starting lineup on Saturday.
Mike Leake struggled again Friday, allowing five runs over seven innings in a loss to the Nationals.
Matt Adams went 2-for-4 with a home run and three RBI in Friday’s loss to the Nationals.
Yadier Molina is not in the Cardinals' lineup Friday.
Jeremy Hazelbaker was checked for a possible oblique injury during Wednesday's game, but he took batting practice Thursday and said he was "good to go."
Matt Carpenter went 0-for-4 with a strikeout in Thursday's loss to the Diamondbacks.
Michael Wacha couldn't quite pick up the win in Thursday's defeat at the hands of the Diamondbacks, surrendering three runs on five hits over seven innings.
Randal Grichuk is not in Thursday's lineup against the Diamondbacks.
Cardinals OF prospect Harrison Bader ripped four hits Wednesday in a victory for Double-A Springfield.
Brayan Pena (knee) expects to resume most baseball activities next week.