Cesar Jimenez is a former professional baseball player who played as a pitcher in Major League Baseball (MLB). He was born on November 12, 1984, in Cumana, Venezuela. Jimenez began his professional baseball career in 2002 when he signed with the Seattle Mariners as an international free agent.

Jimenez spent several years in the minor leagues, playing for various teams in the Mariners' organization. He made his MLB debut on September 2, 2006, against the Oakland Athletics. Jimenez pitched two innings in relief, allowing one hit and striking out one batter. He appeared in a total of six games for the Mariners in 2006, pitching 7.1 innings and allowing three earned runs.

Jimenez spent the next few years bouncing between the minor leagues and the majors. He appeared in 10 games for the Mariners in 2007, pitching 11 innings and allowing six earned runs. In 2008, he pitched in 14 games for the Mariners, posting a 1-0 record and a 6.52 ERA.

In 2009, Jimenez was claimed off waivers by the Philadelphia Phillies. He appeared in 10 games for the Phillies that season, pitching 9.2 innings and allowing four earned runs. He spent most of the season in the minor leagues, where he posted a 2.34 ERA in 42 games.

Jimenez spent the next few years bouncing between the Phillies and their minor league affiliates. He appeared in 19 games for the Phillies in 2010, posting a 2.70 ERA in 13.1 innings. He pitched in just one game for the Phillies in 2011, allowing one earned run in 0.2 innings.

In 2012, Jimenez signed with the Miami Marlins. He spent most of the season in the minor leagues, where he posted a 2.84 ERA in 44 games. He appeared in just one game for the Marlins in 2012, allowing one earned run in 0.2 innings.

Jimenez signed with the Texas Rangers in 2013. He spent most of the season in the minor leagues, where he posted a 2.70 ERA in 44 games. He appeared in just one game for the Rangers in 2013, allowing one earned run in 0.2 innings.

Jimenez signed with the Toronto Blue Jays in 2014. He spent most of the season in the minor leagues, where he posted a 2.45 ERA in 44 games. He appeared in just one game for the Blue Jays in 2014, allowing one earned run in 0.2 innings.

Jimenez signed with the Texas Rangers again in 2015. He appeared in 10 games for the Rangers that season, posting a 4.50 ERA in 10 innings. He spent most of the season in the minor leagues, where he posted a 2.83 ERA in 38 games.

Jimenez retired from professional baseball in 2016. He finished his career with a 1-0 record and a 5.27 ERA in 61.1 innings pitched in the majors. He also posted a 3.27 ERA in 394.2 innings pitched in the minor leagues.