He was with his countrymen Jean Borotra, Jacques Brugnon and René Lacoste Tennis of the most influential players in the twenties and early thirties of the last century. These players became famous as "The Four Musketeers". In 1928, he broke Bill Tilden from as number 1 in tennis.
Cochet won as Rene Lacoste seven Grand Slam titles in France, the USA and England, but without winning also in Australia. He also won the French team six times in a row, the Davis Cup.