Warren will serve as the Mets' opening pitcher in Wednesday's game against the Cardinals, Chelsea Janes of SNY.tv reports.
Warren has turned in an impressive 2.01 ERA and 1.12 WHIP through 22.1 innings with the Mets this season, and the team will now entrust him with getting through the top of St. Louis' order in Wednesday's contest. The team hasn't yet announced which pitcher, if any, will work in bulk relief once Warren exits the game.