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.
In 2015, he was named catching coach and assistant hitting coach of the Oakland Athletics. He had been the team's minor league batting instructor in 2014, after serving as hitting coach of the AZL Athletics in 2007 and 2008 and managing the team from 2009 to 2013. In 2018, he moved to bullpen coach with the Athletics.
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|