Who are the greatest women tennis players of all time

Name what each champion added to the game. Count mechanisms, not trophies.

Key facts

1
Steffi Graf won all four majors and Olympic gold in 1988, a Golden Slam no player in either the men's or women's game has matched.
Olympics.com on the 1988 Golden Slam
2
Graf spent 377 weeks at No. 1, 186 of them consecutive, a record for either tour. Navratilova spent 332 weeks there and Serena Williams 319.
3
Serena Williams won 23 major singles titles, the Open Era record. Margaret Court's 24 span both the amateur and Open eras.
WTA Grand Slam Honor Roll
4
Martina Navratilova won 18 singles majors, including 9 Wimbledons, and 59 major titles in all.
5
Chris Evert won 18 singles majors, including 7 French titles, reached 34 consecutive major semi-finals and won about 90 % of her career matches.

Why it works

Evert's mechanism was depth without error, from a two-handed backhand she made standard in the 1970s. It turns a rally into a test the opponent fails first. Navratilova's was the net behind a left-handed serve, backed by conditioning and a support team the women's game hadn't seen. She made the sport physical.

Graf's was footspeed that let her run around the backhand and hit a forehand from anywhere, inside-out or inside-in, with a slice to change pace. Serena's was the serve: power, placement and disguise that produced free points and a predictable reply for her first strike.

Read that way, the record is a lineage. Each champion set a standard, and the next inherited it. Counting mechanisms tells you more than counting trophies, because trophy counts also reflect era and format.

The line to say on court
“Depth, net, forehand, serve. Four standards, in that order.”

Drill: The blind style test

20 min · with a partner

Have your partner cue ten points from Evert, Navratilova, Graf and Serena, with names hidden and the sound off.
Name the player from the mechanism alone: depth pattern, approach to the net, run-around forehand or serve.
Score your answers, then swap roles.

Number to beat7 of 10 players named from the mechanism

Faults and fixes

Ranking champions by trophies

Differences in title counts are also differences in era and format.

FixName the mechanism first and the count second.

Assuming the women's game was always physical

Navratilova made it so.

FixDate the change to her era.

Thinking the two-handed backhand is modern

Evert made it standard in the 1970s.

FixCredit the lineage.

Questions players ask

Who has the most Grand Slam titles in women's tennis?

Serena Williams holds the Open Era record with 23. Margaret Court won 24, but hers span both the amateur and Open eras, so the comparison depends on how you frame the eras.

Who has the most weeks at world No. 1 in women's tennis?

Steffi Graf, with 377 weeks, 186 of them in a row. Navratilova had 332 and Serena Williams 319.

What is a Golden Slam?

Winning all four majors and Olympic gold in the same year. Steffi Graf did it in 1988, and no one in either game has matched it.

What did Martina Navratilova change about women's tennis?

She built her game on the net behind a left-handed serve and backed it with conditioning and a support team. She made the women's game physical.

What this doesn't cover

Court's 24 against Serena's 23 depends on how you frame the eras, and isn't settled. Women's rating data is thinner before 2000. The mechanism for each champion comes from player profiles and still needs checking against film and data. Titles and weeks don't rank players across eras.

Sources

WTA Grand Slam Honor Roll
Evert–Navratilova rivalry, Wikipedia (match-by-match)
Tennis Abstract: WTA Elo ratings
Olympics.com: Steffi Graf's 1988 Golden Slam

Know the gameWhen did the tennis majors start paying women equallyThe US Open was the first major to pay men and women equally, in 1973. The Australian Open followed in 2001, the French Open in 2006 or 2007, depending on the count, and Wimbledon in 2007, a 34-year gap inside one sport. The women's tour wasn't granted. It was built by nine players on one-dollar contracts and settled major by major.Know the gameHow to read a tennis head-to-head rivalryRead a tennis rivalry by splitting the head-to-head by surface first and by year second, then finding on film what one player changed to solve the other. Evert and Navratilova played 80 times. Navratilova led 43–37 overall, but Evert led 11–3 on clay and Navratilova led 10–5 on grass. The overall count hides the story.Know the gameWhat is the Open Era in tennis, and why does 1968 matter?The Open Era is tennis since 1968, when the majors first let professionals and amateurs play in the same draws. Before it, the best players were barred from the majors for taking money. That's why records carry a start date: Margaret Court has 24 majors across both eras, and Serena Williams holds the Open Era women's record with 23.Know the gameWhat made Federer, Nadal and Djokovic so goodFederer, Nadal and Djokovic shared one engine, the chain from hips to trunk to arm, and built three different answers on it. Federer took the ball early and stole time. Nadal hit a heavily spun left-handed forehand that landed high on a right-hander's backhand. Djokovic returned early and deep, turning the server's weapon into a neutral rally.