Oliver J. Marmol (born July 2, 1986) is the current bench coach of the St. Louis Cardinals of Major League Baseball (MLB). Marmol attended Dr. Phillips High School in Orlando, Florida and was drafted by the Pittsburgh Pirates in the 31st round of the 2004 MLB Draft. He did not sign with the Pirates and played college baseball at the College of Charleston. He was drafted by the St. Louis Cardinals in the sixth round of the 2007 MLB Draft and played in the Cardinals organization until 2010. In 2011, he became the hitting coach of the Gulf Coast League Cardinals. The next season, he became manager of the Johnson City Cardinals and in 2015 was promoted to manager of the Palm Beach Cardinals.