WTA Tour

The WTA Tour underwent slight change in the classification of tournaments in 2021, which were organized on par with the nomenclature used on ATP Tour:

• Grand Slam tournaments (4)
• Year-ending WTA Finals (1)
• WTA 1000 tournaments (9):
  • Mandatory: Four combined tournaments with male professional players with prize money ranging from US$6.5 million to US$8.3 million. These tournaments are held in Indian Wells, Miami, Madrid, and Beijing. However, Beijing tournament could not be held in 2021–22 due to the impact of Covid-19 Pandemic.
  • Non-mandatory: Five events in Doha/Dubai, Rome, Montreal/Toronto, Cincinnati, and Wuhan with prize money ranging from US$2.3 million to US$2.7 million. In 2021–22, the tournament in Wuhan was suspended due to Covid–19 Pandemic. Also, in 2022, a new WTA 1000 tournament was held in Guadalajara as a replacement for Wuhan.
• WTA 500 tournaments: 12 events with prize money from US$700,000 to US$900,000.
• WTA 250 tournaments: There are nearly 30 tournaments, with prize money at US$250,000.

The WTA Tour comprised from 2009 to the 2020 reorganization:

• Grand Slam tournaments (4)
• Year-ending WTA Tour Championships (1)
• Premier tournaments (21):
  • Premier Mandatory: Four combined tournaments with male professional players, with US$6.5 million in equal prize money for men and women (increased from $4.5 million in 2013). These tournaments are held in Indian Wells, Miami, Madrid, and Beijing.
  • Premier Five: Five $2.8 million events in Doha/Dubai, Rome, Montreal/Toronto, Cincinnati, and Wuhan.
  • Premier: 12 events with prize money from US$799,000 to US$2.5 million.
• International tournaments: There are 32 tournaments, with prize money for all except four events at US$250,000. The exceptions are the Shenzhen Open, Moscow River Cup, Hong Kong Tennis Open and the Tianjin Open, each with prize money of US$750,000; and the year-ending WTA Elite Trophy in Zhuhai which has prize money of US$2.3 million.