Gender inequality came to the forefront of sport this week with some controversial comments from world tennis number one Novak Djokovic.

"I think that our men’s tennis world, ATP world, should fight for more," he said, "because the stats are showing that we have much more spectators on the men’s tennis matches."

He added: "I think that’s one of the reasons why maybe we should get awarded more."

Many tend to disagree while others do suggest the women's game is upped to five sets to match the prize money. But in other sports there are similar circumstances between the male and female competitions but a stark contrast in prize money available.

Here we take a look at some of the big examples in the world of sport.

Djokovic's comments are a surprise because in reality, tennis is one of the most equal main sports in terms of prize money for major tournaments.

The top three Grand Slam titles - US Open, Wimbledon and the French Open - all have the same winnings for both male and female players.

Once converted the US Open equates to roughly £2.4m, more than Wimbledon, while the French Open prize is slightly less than The Championships at £1.7m.

Arguably the biggest sport on the board football also heralds the biggest different in prize money between the genders.

The (male) winners of the FIFA World Cup will earn ten times more than a winner of either tennis US Open whereas the winners of the Women's World Cup will collectively earn less at just $2m (£1.4m, €1.7m).

In the UEFA Champions League the gulf is even greater though. While the winning male team will pocket €15m ($16.7m, £11.8m) the winners of the competition's female equipment take home even less. The measly €250,000 ($279,000 or £197,000) is a mere fraction in comparison.

Djokovic is a self-confessed AC Milan fan and the men's team have won the competition (in both formats) seven times.

Again in golf there is a gulf, although it is not quite as vast as football's two big competitions.

In The Open, one of the world's oldest sporting competitions, women earn a fifth less than men in what is only one of two majors women are allowed to compete for in the game.

The Masters tournament at Augustus does not permit women members to its club with a campaign launched in 2004 to change the ruling. However it failed to pass and the $1.8m prize remains exclusive to male players.

The other tournament women are allowed to compete in is the US Open where the winner earns a million dollars less than a male champion.

Across other sports there is a wide range of scale in difference between male and female prize money.

In snooker the men's prize is 50 times greater than that of the women's for the equivalent world championship and in the British Darts Organisation's main competition a male winner picks up £100,000 while a female winner only earns £12,000.

However like tennis the World Indoor Bowls Championship boasts equality in its prize money with both men and women taking home £55,000 if they win the tournament.