Carlo Cup for the second time, eliminating Italian aces Giorgio de Stefani in the semi-final and Umberto de Morpurgo for the former championships and de Morpurgo again for the latter. He also defended his Monaco mixed title for the first time and the Butler Cup for the third. But he lost in Roubaix and in Biarritz to Christian Boussus (5th in French rankings) and Pierre Henri Landry (7th in French rankings) respectively, which raised concerns and let to newspaper speculation about a loss of form. In Berlin at the Rot-Weiss Club Tournament he defeated Roderich Menzel in the singles event and clinched the doubles with Jacques Brugnon. His only loss came in the mixed doubles with Cilly Aussem against teammate Brugnon and Bobby Heine, which went to three sets. He successfully defended the Austrian championships against Franz Wilhelm Matejka and claimed the doubles with Roger Danet. He claimed the Czechoslovakian Championships from fellow countryman Christian Boussus. They joined forces and together won the doubles. In May at the 34th French Championships the men's doubles tournament took place first. With Lacoste – Borotra's victory over Tilden – Hunter and Cochet – Brugnon's easy win over Gregory – Collins in the semi-finals secured the Four Musketeers their third doubles face-to-face final. Unfortunately for Cochet in the fifth set they were serving for the match and had thirty-love in the game, when Brugnon missed an easy ball when three match points were at stake. Lacoste and Borotra revived from that moment on and closed out the final set 8–6. In singles he was put out of the contest by Borotra in the semi-finals and thus was unable to retain his title. However, Cochet did not leave without a trophy as the mixed championship was earned by him and Eileen Bennett Whittingstall. Cochet then set out for an exhibition tour through central Europe in June, playing in Budapest, Belgrade and Vienna. Rivalry with the United States team Cochet was seeded first at the 1929 Wimbledon Championships. He marched through the earlier rounds, having only one five-set match against Irish champion George Lyttleton-Rogers. In the quarterfinals he beat Hendrik Timmer in straights, then Bill Tilden in the semi-finals also in straights and second seeded compatriot Jean Borotra for the championship in his third straight sets victory in a row. Despite this he lost 63 games throughout the tournament, which was the most among the seeded