Marcus Christian Jensen
- Bats Both, Throws Right
- Height 6' 4", Weight 195 lb.
- High School Skyline High School (Oakland)
- Debut April 14, 1996
- Final Game June 23, 2002
- Born December 14, 1972 in Oakland, CA USA
Marcus Jensen won an Olympic gold medal for the United States in the 2000 Sydney Olympics. In the 1999 Pan American Games, he had played a key role in helping the US qualify for the Olympics by hitting .300 with a team-high 3 home runs and 9 RBI. He scored the winning run in the 10-inning game against Mexico that clinched the Olympic berth for the Americans. In the Gold Medal game against Cuba, he drove in Milton Bradley with the US's only run off Jose Contreras.
A catcher, Jensen was drafted by the San Francisco Giants in the 1st round of the 1990 Amateur Draft out of Skyline High School. He gradually advanced through the Giants minor league system and made his major league debut on April 14, 1996. Over the next several years he bounced between MLB and the minor leagues with several teams. In his seven partial MLB seasons, Jensen hit .184/.287/.289 while appearing in 145 games. He finished his playing career in the independent leagues in 2006 with the Reno Silver Sox of the now defunct Golden Baseball League.
The Oakland Athletics hired Jensen in 2007 to work with their AZL Athletics hitters. After two years in this role he was promoted to manager of the team through the 2013 season. In the latter season he also served as the minor league catching coordinator for the A's. Jensen returned to coaching hitters in 2014 and worked as the minor league hitting coordinator.
In 2015, the A's promoted Jensen to the major league staff where he was both the catching coach and assistant hitting coach. He retained these roles through the 2017 season before serving as the team's bullpen coach from 2018-2022. In 2023, his responsibilities were changed to quality control coach.
Year-By-Year Minor League Managerial Record
|2009||AZL Athletics||Arizona League||22-34||10th||Oakland Athletics|
|2010||AZL Athletics||Arizona League||30-26||6th||Oakland Athletics|
|2011||AZL Athletics||Arizona League||27-29||8th||Oakland Athletics|
|2012||AZL Athletics||Arizona League||37-17||1st||Oakland Athletics||Lost League Finals|
|2013||AZL Athletics||Arizona League||25-30||9th||Oakland Athletics|