Ivan Lendl is a retired Czech-American professional tennis player. Lendl first came to the tennis world's attention as a junior player. In 1978, he won the boys' singles titles at both the French Open and Wimbledon and was the world No. 1 ranked junior player.

Lendl turned professional in 1978. After reaching his first top-level singles final in 1979, he won seven singles titles in 1980, including three tournament wins in three consecutive weeks on three different surfaces. Lendl was part of Czechoslovakia's Davis Cup winning team that year. He was the driving force behind the country's team in the first half of the 1980s, and was also part of the Czechoslovak team that won the World Team Cup in 1981 and was runner-up in 1984 and 1985. He was world No. 1 for 270 weeks and won 94 singles titles. At the majors, he won eight titles and was runner-up a record 11 times. He also won seven year-end championships. Lendl pioneered a new style of tennis; his game was built around his forehand, hit hard with heavy topspin, and his success is cited as a primary influence in popularizing the currently common playing style of aggressive baseline power tennis.

After retirement, he became a tennis coach for multiple players. He has helped Andy Murray win three major titles and reach the No. 1 ranking.