Competing for Czechoslovakia and later Australia, Mandlíková was one of the brightest stars of her generation and is considered one of the greatest female players of the Open Era.

She led Czechoslovakia to three consecutive Federation Cup victories from 1983 to 1985, and was only the third woman to win Grand Slam titles on grass (the Australian Open was a grass-court tournament until 1988), clay and hardcourts, joining Chris Evert and Martina Navratilova.

[4] Her second came the following year at the French Open with straight-sets wins over Chris Evert in the semifinals and West German Sylvia Hanika in the final.

This victory in the final made her only the third woman, after Evert and Navratilova, to win Grand Slam titles on grass, clay and hard court.

The following year, Mandlíková teamed with Turnbull to win the women's doubles title at the WTA Tour Championships.

In doing so, they defeated the top two teams at the time - Navratilova and Pam Shriver in the semifinals and Claudia Kohde-Kilsch and Helena Suková in the final.

A high point of Mandlíková's European summer in 1986 was a win over Steffi Graf in the quarterfinals of the French Open.

She teamed with Pat Cash to represent Australia in the first edition of the Hopman Cup, reaching the final played on New Year's Day 1989, but losing to Czechoslovakia.

In September she teamed with Navratilova to win the US Open women's doubles title, defeating Shriver and Mary Joe Fernández in the final.

Ten years after her first Grand Slam victory, Mandlíková retired from the professional tennis tour in 1990 at age 28, having won 27 singles and 19 doubles titles.

[4] Mandlíková married Czech-born Australian restaurateur Jan Sedlak at the Old Town Hall in Prague during 1986 Federation Cup.