Tennis. These performances gained Krishnan seventh seeded status at Wimbledon in 1960, where he reached the semi-finals losing to the eventual champion Fraser. Krishnan defeated Andres Gimeno in five sets on his way to the semifinal. Instead of Krishnan, Kramer signed Gimeno after Wimbledon for a much smaller guarantee than Krishnan had been offered. Krishnan won the 1961 Wiesbaden tennis tournament, including a win over Wilhelm Bungert. In 1961, Krishnan again reached the Wimbledon semi-finals by beating Emerson in straight sets in the quarter-finals but lost in the semis to eventual champion Laver. The following season, he reached the quarterfinals at the French Open in 1962, where he led Emerson two sets to one, but strangely lost the fifth set at love. Krishnan received his highest seeding at Wimbledon at No. 4 in 1962 but had to withdraw after three matches due to an ongoing ankle injury. Krishnan won the 1963 Antwerp International Championships tournament on red clay with a four-set win in the final over Nicola Pietrangeli. Krishnan won the 1965 River Oaks International Tennis Tournament at Houston, Texas with wins over Osuna, Emerson in the semi-final in four sets, and Richey in the final in four sets. He was reportedly given a winner's hug of congratulations by future President George H. W. Bush after the victory. In 1967 Krishnan won the Antwerp International Championships on red clay a second time by beating Emerson in the final in three straight sets. He won the National Lawn Tennis Championships of India a record eight times, and reached ten finals. Registered professional Krishnan, like Emerson, Stolle, Santana, Okker and other prominent "amateur" tennis players, became a registered professional with a national tennis association. He was under contract to his national tennis association, and not to an independent professional tour, and was therefore eligible to represent India in Davis Cup competition, but also received money earnings in designated tournaments approved by his national association. Open era Krishnan won the Canadian Open in 1968 over Torben Ulrich in the final. Krishnan lost to John Newcombe at the inaugural U.S. Open that year. However, Krishnan had a notable win over the hard-hitting Clark Graebner, a semifinalist at the 1968 U.S. Open, in Davis Cup play later that season, in which Graebner "was completely befuddled by the junk-balling tactics of Krishnan...losing decisively." Also that year, Krishnan won the Stuttgart tournament on red clay, which included