Bob Geren is a former Major League Baseball player and coach who had a career spanning over two decades. He was born on September 22, 1961, in San Diego, California, and attended Clairemont High School, where he played baseball and football. After graduating in 1979, he was drafted by the San Diego Padres in the first round of the MLB draft.

Geren made his MLB debut with the New York Yankees in 1988 and played for them until 1991. He then played for the San Diego Padres in 1993 and the Oakland Athletics from 1993 to 1995. He finished his playing career with the San Diego Padres in 1996.

After retiring as a player, Geren began his coaching career with the Oakland Athletics in 2003 as a bullpen coach. He was promoted to bench coach in 2006 and served in that role until 2007 when he was named the team's manager. He managed the Athletics from 2007 to 2011, leading them to a record of 334-376.

During his time as manager, Geren was known for his analytical approach to the game and his ability to develop young players. He was also criticized for his handling of the team's bullpen and his communication skills with players and the media.

After leaving the Athletics, Geren served as the bench coach for the New York Mets from 2012 to 2015 and the Los Angeles Dodgers from 2016 to 2018. He was also a candidate for several managerial positions during this time but was not hired.

In 2019, Geren was named the bench coach for the Oakland Athletics, rejoining the team where he began his coaching career. He has continued to serve in that role, helping the Athletics reach the playoffs in each of the past two seasons.

Overall, Bob Geren had a long and successful career in baseball as both a player and coach. While he may be remembered for his time as the manager of the Oakland Athletics, his contributions to the game extend far beyond that.