American mixed martial arts star Ronda Rousey takes the first place in this ranking. She earned $9.9 million in 2016, or $39,100 per day. She is the former UFC Women's Bantamweight Champion, as well as the last Strikeforce Women's Bantamweight Champion. Almost all fights in the MMA were completed by the athlete in the first round.

The second place in this list goes to racing driver Danica Patrick with income for 2016 at $7.8 million, or $30,900 per day. The car racer from the USA won a number of races of the World Karting Association. To date, she participates in the Nascar Sprint Cup and Nascar Nationwide Series.

The third place belongs to Polish tennis player Agnieszka Radwanska. Her income for the past year totaled $5.1 million, or $20,300 per day. She is the winner of 22 WTA tournaments and the ex-second world number one in the singles.

The fourth place is taken by another tennis player, Garbine Muguruza from Spain. The athlete's income for 2016 was $4.5 million, or $18,000 per day. She won the French Open 2016 and eight WTA tournaments, became a Wimbledon finalist 2015, and also has a number of other awards.

The fifth place belongs to Belarusian tennis player Victoria Azarenka, who earned $3.5 million, or $14,000 a day, last year. She is the former first racket of the world in singles. In 2012, the athlete managed to win a bronze medal in singles and a gold medal with Maxim Mirnyi at the 2012 Olympics in London.

Russian tennis player Maria Sharapova takes the sixth place with her income for 2016 at $1.8 million, or $7,400 per day. Sharapova is the ex-first racket of the world. She won all the Grand Slam tournaments in different periods of time.

Maria Sharapova is the five-time winner of Grand Slam singles tournaments and also has won 38 WTA tournaments, the Federation Cup (2008) and others.

Serbian tennis player Ana Ivanovic is the seventh in this ranking. Her income for the past year equals $1.8 million, or $7,400 per day. The athlete managed to win prizes in the Grand Slam tournament and become the winner of 15 WTA tournaments in singles. She also has a number of other sports achievements.

The eighth place among the most highly paid sportswomen belongs to tennis player Caroline Wozniacki with her income for 2016 at $990,000 or $3,900 per day. She is the former first racket of the world in singles, winner of 27 WTA tournaments (25 of them singles), one junior Grand Slam singles tournament (Wimbledon 2006) and other.

Tennis player Serena Williams is on the ninth place of this rating. Over the past year, her income reached $880,000 or $3,400 per day. The sportswoman has the title of four-time Olympic champion in singles and women's doubles.

Williams is considered to be the only one among men and women who owns the "career gold helmet" (the title is given for wins in all four Grand Slam tournaments and at the Olympic Games). She has 38 wins in the Grand Slam tournaments, and by the number of titles on them, the sportswoman takes the second place in the history of women's tennis.