César Ramírez (Latin American Spanish: [ˈsesaɾ raˈmiɾes]; born January 25, 1990) nicknamed "el Tiburón" ("the Shark"), is a tennis player from Mexico.

[1][2][3] He played for the Mexican Davis Cup squad in 2012.

[4] Ramírez tested positive for steroids[5] and has been suspended from competition for four years, until 12 April 2022.

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