Ramírez was active during the 1970s and 1980s. Ramírez won 19 singles titles, including titles at the
ATP Masters Series events in
Rome (1975) and
Monte Carlo (1978). He won 60 doubles titles, including
Wimbledon (1976), the French Open (1975 & '77), and at ATP Masters Series events in
Cincinnati (1978),
Canada (1976, ’77 & ’81),
Monte Carlo (1979),
Paris (1977), and
Rome (1974, ’75, ’76 & ’77). He won the
WCT World Doubles twice in 1975 and 1980. He won the men's singles in the
Ojai Tennis Tournament in 1971. He played tournaments of the two world tennis circuits played at the time, the
Grand Prix tennis circuit and the
World Championship Tennis (WCT). These circuits were predecessors of the
Association of Tennis Professionals Tour (
ATP Tour). In 1975 he won the Grand Prix, the present day equivalent of the Race. ==Grand Slam tournament finals==